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{{short description|Suspension bridge on the San Francisco Bay}} {{Short description|San Francisco Bay suspension bridge}}
{{protection padlock|small=yes}}

{{Use mdy dates|date=February 2021}} {{Use mdy dates|date=March 2024}}
{{Infobox bridge {{Infobox bridge
| image = Golden Gate Bridge as seen from Battery East.jpg
| image =File:GoldenGateBridge-001.jpg
| image_size = 270px | image_size =
| caption = View from the ], 2017
| caption =
| official_name = Golden Gate Bridge | official_name = Golden Gate Bridge
| carries = {{Bulleted list
| carries = 6 lanes of {{jct|state=CA|US|101|CA|1}} (]), pedestrians and bicycles
| 6 lanes of {{jct|state=CA|US|101|CA|1}} {{Crossreference|selfref=no|(see ])}}
| crosses = ]
| Bicycle route: {{jct|state=CA|USBR|95}}
| locale = ], ] and ], California, U.S.
| Eastern walkway: pedestrians or bicycles during selected hours {{Crossreference|selfref=no|(see ])}}
| maint = ]<ref>{{cite web|title=About Us|url=http://goldengate.org/organization/|website=goldengate.org|publisher=Golden Gate Bridge, Highway and Transportation District|access-date=November 27, 2017|language=en}}</ref>
| Western walkway: bicycles&nbsp;(only when pedestrians are allowed on the eastern sidewalk)
| engineering = ], ], ]
}}
| architect = ]
| crosses = ]
| design = ], ], ] & ]
| locale = ], ] and ], California, U.S.
| mainspan ={{convert|4200|ft|m|1|abbr=on}},<ref name="Denton"/> about 0.79 miles (1.28 km)
| maint = ]<ref>{{cite web|title=About Us|url=https://goldengate.org/organization/|website=goldengate.org|publisher=Golden Gate Bridge, Highway and Transportation District|access-date=November 27, 2017|language=en}}</ref>
| length = {{convert|8980|ft|m|1|abbr=on}},<ref name=structurae>{{Structurae|id=20000029|title=Golden Gate Bridge}}</ref> about {{convert|1.7|mi|km|1|abbr=on}}
| website = {{URL|goldengate.org/bridge}}
| width = {{convert|90|ft|m|1|abbr=on}}
| engineering = ], ], ]
| height = {{convert|746|ft|m|1|abbr=on}}
| architect = ]
| clearance = {{convert|14|ft|m|1|abbr=on}} at toll gates, trucks cannot pass
| builder = ]
| below = {{convert|220|ft|m|1|abbr=on}} at high ]
| design = ], ], ] & ]
| traffic = 110,000<ref name="dailycrossings">{{cite web |url=http://goldengatebridge.org/research/crossings_revenues.php |title=Annual Vehicle Crossings and Toll Revenues, FY 1938 to FY 2011 |publisher=Golden Gate Bridge, Highway and Transportation District |access-date=December 23, 2012}}</ref>
| mainspan = 4200 ft,<ref name="Denton"/> about {{convert|0.79|mi|km|2|abbr=on}}
| material = Steel
| length = 8980 ft,<ref name=structurae>{{Structurae|id=20000029|title=Golden Gate Bridge}}</ref> about {{convert|1.70|mi|km|2|abbr=on}}
| begin = {{start-date|January 5, 1933}}
| width = {{convert|90|ft|m|1|abbr=on}}
| complete = {{end-date|April 19, 1937}}
| height = {{convert|746|ft|m|1|abbr=on}}
| open = {{start date and age|1937|May|27|mf=yes}}
| clearance = {{convert|14|ft|m|1|abbr=on}} at toll gates
| closed =
| below = {{convert|220|ft|m|1|abbr=on}} at high ]
| toll = Cars (southbound only) <br /> $8.35 (Pay by plate), $7.35 (]), $5.35 (carpools during peak hours, FasTrak only)
| traffic = 88,716 (FY2020)<!--32470000/366--><ref name="dailycrossings">{{cite web |url=https://www.goldengate.org/bridge/history-research/statistics-data/annual-vehicle-crossings-toll-revenues/ |title=Annual Vehicle Crossings and Toll Revenues |publisher=Golden Gate Bridge, Highway and Transportation District |access-date=January 5, 2023}}</ref>
| map_image = San_Francisco_Bay_Bridges_map_en.svg
| material = Steel
| map_caption = Golden Gate Bridge within the San Francisco Bay Area (westernmost bridge)
| begin = {{start date text|January 5, 1933}}
| coordinates = {{coord|37|49|11|N|122|28|43|W|display=inline,title}}
| map_type = | complete = {{end date text|April 19, 1937}}
| map_relief = yes<!-- Use the relief map, if it exists --> | open = {{start date and age|1937|May|27
| extra = {{Designation list | mf = yes}}
| closed =
| embed = yes
| toll = {{Plainlist|
| designation1 = California
* Southbound only
| designation1_number = 974
* ] or ], cash not accepted
| designation1_date = June 18, 1987<ref name=CHL>{{cite ohp|974|Golden Gate Bridge|2012-10-08}}</ref>
* Effective {{Start and end dates|2024|07|01|2025|06|30}}:
| designation2 = San Francisco
* $9.25 (FasTrak users)
| designation2_number = 222
* $9.50 (Pay-by-plate users)
| designation2_date = May 21, 1999<ref name=SFLandmark>{{cite web |title=City of San Francisco Designated Landmarks |publisher=City of San Francisco |url=http://www.sf-planning.org/Modules/ShowDocument.aspx?documentid=5081 |access-date=October 21, 2012 |archive-url=https://web.archive.org/web/20140325040805/http://sf-planning.org/Modules/ShowDocument.aspx?documentid=5081 |archive-date=March 25, 2014 |url-status=dead }}</ref>
* $7.25 (carpools during peak hours, FasTrak only)
}}
| coordinates = {{coord|37|49|11|N|122|28|43|W
| display = inline,title}}
| extra = {{Designation list
| embed = yes
| designation1 = California
| designation1_number = 974
| designation1_date = June 18, 1987<ref name=CHL>{{cite ohp|974|Golden Gate Bridge|2012-10-08}}</ref>
| designation2 = San Francisco
| designation2_number = 222
| designation2_date = May 21, 1999<ref name=SFLandmark>{{cite web | title = City of San Francisco Designated Landmarks | publisher = City of San Francisco | url = https://www.sf-planning.org/Modules/ShowDocument.aspx?documentid=5081 | access-date = October 21, 2012 | archive-url = https://web.archive.org/web/20140325040805/https://sf-planning.org/Modules/ShowDocument.aspx?documentid=5081 | archive-date = March 25, 2014 }}</ref>
}} }}
}} }}


The '''Golden Gate Bridge''' is a ] spanning the ], the {{convert|1|mi|km|adj=mid|-wide|spell=in}} ] connecting ] and the ]. The structure links the U.S. city of ], ]—the northern tip of the ]—to ], carrying both ] and ] across the strait. The bridge is one of the most internationally recognized symbols of San Francisco and California. It was initially designed by engineer ] in 1917. It has been declared one of the ] by the ].<ref>{{cite web |url=http://www.asce.org/Content.aspx?id=2147487305 |title=American Society of Civil Engineers Seven Wonders |publisher=Asce.org |date=July 19, 2010 |access-date=August 30, 2010 |url-status=dead |archive-url=https://web.archive.org/web/20100802060056/http://www.asce.org/Content.aspx?id=2147487305 |archive-date=August 2, 2010}}</ref> The '''Golden Gate Bridge''' is a ] spanning the ], the {{convert|1|mi|km|adj=mid|-wide|spell=in}} ] connecting ] and the ]. The structure links the U.S. city of ], ]—the northern tip of the ]—to ], carrying both ] and ] across the strait. It also carries pedestrian and bicycle traffic, and is designated as part of ]. Recognized by the ] as one of the ],<ref>{{cite web |url=https://www.asce.org/Content.aspx?id=2147487305 |title=American Society of Civil Engineers Seven Wonders |publisher=Asce.org |date=July 19, 2010 |access-date=August 30, 2010 |archive-url=https://web.archive.org/web/20100802060056/https://www.asce.org/Content.aspx?id=2147487305 |archive-date=August 2, 2010}}</ref> the bridge is one of the most internationally recognized symbols of San Francisco and California.

The idea of a fixed link between San Francisco and Marin had gained increasing popularity during the late 19th century, but it was not until the early 20th century that such a link became feasible. ] served as chief engineer for the project, with ], ] and ] making significant contributions to its design. The bridge opened to the public in 1937 and has undergone various retrofits and other improvement projects in the decades since.


The ] travel guide describes the Golden Gate Bridge as "possibly the most beautiful, certainly the most photographed, bridge in the world."<ref name="Frommers">{{cite book|last1=Levine|first1=Dan|title=Frommer's comprehensive travel guide, California '93|date=1993|publisher=Prentice Hall Travel|location=New York|isbn=0671846744|page=118}}</ref><ref name="Frommers2">{{cite book|last1=McGrath|first1=Nancy|title=Frommer's 1985-86 guide to San Francisco|date=1985|publisher=Frommer/Pasmantier Pub.|location=New York|isbn=0671526545|page=10}}</ref> At the time of its opening in 1937, it was both the ] and the ] suspension bridge in the world, with a main span of {{convert|4,200|ft|m|sigfig=3}} and a total height of {{convert|746|ft|m}}.<ref>History.com Editors (2019). . History. Retrieved June 29, 2020. </ref> The Golden Gate Bridge is described in ] travel guide as "possibly the most beautiful, certainly the most photographed, bridge in the world."<ref name="Frommers">{{cite book|last1=Levine|first1=Dan|title=Frommer's comprehensive travel guide, California '93|date=1993|publisher=Prentice Hall Travel|location=New York|isbn=0-671-84674-4|page=118}}</ref><ref name="Frommers2">{{cite book|last1=McGrath|first1=Nancy|title=Frommer's 1985-86 guide to San Francisco|date=1985|publisher=Frommer/Pasmantier Pub.|location=New York|isbn=0-671-52654-5|page=10}}</ref> At the time of its opening in 1937, it was both the ] and the ] suspension bridge in the world, titles it held until ] and ] respectively. Its main span is {{convert|4,200|ft|m|sigfig=3}} and its total height is {{convert|746|ft|m}}.<ref>{{cite web |date=2019 |url=https://www.history.com/topics/landmarks/golden-gate-bridge |title=Golden Gate Bridge |website=history.com |access-date=June 29, 2020}}</ref>


==History== ==History==


===Ferry service=== ===Ferry service===
{{see|Ferries of San Francisco Bay}} {{Further|Ferries of San Francisco Bay}}
Before the bridge was built, the only practical short route between San Francisco and what is now Marin County was by boat across a section of San Francisco Bay. A ferry service began as early as 1820, with a regularly scheduled service beginning in the 1840s for the purpose of transporting water to San Francisco.<ref name="two">{{cite web |title=Two Bay Area Bridges |access-date=March 9, 2009 |publisher=US Department of Transportation, Federal Highway Administration |url=http://www.fhwa.dot.gov/infrastructure/2bridges.cfm}}</ref> Before the bridge was built, the only practical short route between San Francisco and what is now Marin County was by boat across a section of San Francisco Bay. A ferry service began as early as 1820, with a regularly scheduled service beginning in the 1840s for the purpose of transporting water to San Francisco.<ref name="two">{{cite web |title=Two Bay Area Bridges |access-date=March 9, 2009 |publisher=US Department of Transportation, Federal Highway Administration |url=https://www.fhwa.dot.gov/infrastructure/2bridges.cfm}}</ref>


The Sausalito Land and Ferry Company service, launched in 1867, eventually became the Golden Gate Ferry Company, a ] subsidiary, the largest ferry operation in the world by the late 1920s.<ref name="two"/><ref name="scrap">{{cite news |url=http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2005/04/28/BAG8BCGI3I1.DTL&hw=ferry&sn=310&sc=862 |work=San Francisco Chronicle |title=Ferry tale&nbsp;– the dream dies hard: 2 historic boats that plied the bay seek buyer&nbsp;– anybody |author=Fimrite, Peter |access-date=October 31, 2007 |date=April 28, 2005}}</ref> Once for railroad passengers and customers only, Southern Pacific's automobile ferries became very profitable and important to the regional economy.<ref>{{cite book |title=San Francisco Bay Ferryboats |author=Harlan, George H. |publisher=Howell-North Books |year=1967 |url=https://books.google.com/books?id=IPBAAAAAIAAJ}}</ref> The ferry crossing between the ] in San Francisco and ] in Marin County took approximately 20 minutes and cost $1.00 per vehicle,{{when|date=January 2019}} a price later reduced to compete with the new bridge.<ref name="bc">{{cite news |url=http://www.baycrossings.com/archives/2002/04_May/so_where_are_they_now.htm |publisher=Bay Crossings |title=So Where Are They Now? The Story of San Francisco's Steel Electric Empire |author=Span, Guy |date=May 4, 2002 |access-date=October 31, 2007 |archive-url=https://web.archive.org/web/20071023072202/http://www.baycrossings.com/Archives/2002/04_May/so_where_are_they_now.htm |archive-date=October 23, 2007 |url-status=dead }}</ref>{{better source|the source no longer exists|date=January 2019}} The trip from the ] took 27 minutes. In 1867, the Sausalito Land and Ferry Company opened. In 1920, the service was taken over by the ], which merged in 1929 with the ferry system of the ], becoming the Southern Pacific-Golden Gate Ferries, Ltd., the largest ferry operation in the world.<ref name="two"/><ref name="scrap">{{cite news |url=https://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2005/04/28/BAG8BCGI3I1.DTL&hw=ferry&sn=310&sc=862 |work=San Francisco Chronicle |title=Ferry tale&nbsp;– the dream dies hard: 2 historic boats that plied the bay seek buyer&nbsp;– anybody |author=Fimrite, Peter |access-date=October 31, 2007 |date=April 28, 2005}}</ref> Once for railroad passengers and customers only, Southern Pacific's automobile ferries became very profitable and important to the regional economy.<ref>{{cite book |title=San Francisco Bay Ferryboats |author=Harlan, George H. |publisher=Howell-North Books |year=1967 |url=https://books.google.com/books?id=IPBAAAAAIAAJ}}</ref> The ferry crossing between the ] in San Francisco and ] in Marin County took approximately 20 minutes and cost $1.00 per vehicle prior to 1937, when the price was reduced to compete with the new bridge.<ref name="bc">{{cite news |url=https://www.baycrossings.com/archives/2002/04_May/so_where_are_they_now.htm |publisher=Bay Crossings |title=So Where Are They Now? The Story of San Francisco's Steel Electric Empire |author=Span, Guy |date=May 4, 2002 |access-date=October 31, 2007 |archive-url=https://web.archive.org/web/20071023072202/https://www.baycrossings.com/Archives/2002/4_May/so_where_are_they_now.htm |archive-date=October 23, 2007 }}</ref><ref>{{Cite web |date=September 25, 2019 |title=Golden Gate Bridge War on Ferries |url=https://www.sausalitohistoricalsociety.com/2019-columns/2019/9/25/golden-gate-bridge-war-on-ferries |access-date=August 9, 2023 |website=The Sausalito Historical Society |language=en-US}}</ref> The trip from the ] took 27 minutes.


Many wanted to build a bridge to connect San Francisco to Marin County. San Francisco was the largest American city still served primarily by ferry boats. Because it did not have a permanent link with communities around the bay, the city's growth rate was below the national average.<ref name="Sigmund">{{cite web |last=Sigmund |first=Pete |year=2006 |url=http://www.cegltd.com/story.asp?story=7045&headline=The%20Golden%20Gate:%20%EBThe%20Bridge%20That%20Couldn%EDt%20Be%20Built%ED |title=The Golden Gate: 'The Bridge That Couldn't Be Built' |publisher=Construction Equipment Guide |access-date=May 31, 2007}}</ref> Many experts said that a bridge could not be built across the {{convert|6700|ft|m|abbr=off|adj=on}} strait, which had strong, swirling tides and currents, with water {{convert|372|ft|m|abbr=on}} deep<ref>{{cite journal |authors=Barnard, Hanes, Rubin, Kvitek |title=Giant Sand Waves at the Mouth of San Francisco Bay |journal=Eos |date=July 18, 2006 |volume=87 |issue=29 |pages=285 |url=http://seafloor.csumb.edu/publications/Barnard_etal_EOSJuly2006.pdf |access-date=April 22, 2012 |archive-url=https://web.archive.org/web/20180618102436/http://seafloor.csumb.edu/publications/Barnard_etal_EOSJuly2006.pdf |archive-date=June 18, 2018 |url-status=dead |doi=10.1029/2006EO290003 |bibcode=2006EOSTr..87..285B }}</ref> at the center of the channel, and frequent strong winds. Experts said that ferocious winds and blinding fogs would prevent construction and operation.<ref name="Sigmund"/> Many wanted to build a bridge to connect San Francisco to Marin County. San Francisco was the largest American city still served primarily by ferry boats. Because it did not have a permanent link with communities around the bay, the city's growth rate was below the national average.<ref name="Sigmund">{{cite web |last=Sigmund |first=Pete |year=2006 |url=https://www.cegltd.com/story.asp?story=7045&headline=The%20Golden%20Gate:%20%EBThe%20Bridge%20That%20Couldn%EDt%20Be%20Built%ED |title=The Golden Gate: 'The Bridge That Couldn't Be Built' |publisher=Construction Equipment Guide |access-date=May 31, 2007 |archive-date=December 16, 2019 |archive-url=https://web.archive.org/web/20191216110116/https://www.cegltd.com/story.asp?story=7045&headline=The%20Golden%20Gate:%20%EBThe%20Bridge%20That%20Couldn%EDt%20Be%20Built%ED }}</ref> Many experts said that a bridge could not be built across the {{convert|6700|ft|m|abbr=off|adj=on}} strait, which had strong, swirling tides and currents, with water {{convert|372|ft|m|abbr=on}} deep<ref>{{cite journal |author=P. L. Barnard |author2=D. M. Hanes |author3=D. M. Rubin |author4=R. G. Kvitek |title=Giant Sand Waves at the Mouth of San Francisco Bay |journal=Eos |date=July 18, 2006 |volume=87 |issue=29 |page=285 |url=https://seafloor.csumb.edu/publications/Barnard_etal_EOSJuly2006.pdf |access-date=April 22, 2012 |archive-url=https://web.archive.org/web/20180618102436/https://seafloor.csumb.edu/publications/Barnard_etal_EOSJuly2006.pdf |archive-date=June 18, 2018 |doi=10.1029/2006EO290003 |bibcode=2006EOSTr..87..285B |issn = 0096-3941}}</ref> at the center of the channel, and frequent strong winds. Experts said that ferocious winds and blinding fogs would prevent construction and operation.<ref name="Sigmund"/>


===Conception=== ==== Conception ====
] in foreground, c. 1891]] ] in foreground, {{circa|1891}}]]
Although the idea of a bridge spanning the Golden Gate was not new, the proposal that eventually took hold was made in a 1916 '']'' article by former engineering student James Wilkins.<ref name="Owens">{{cite book |author=Owens, T.O. |year=2001 |title=The Golden Gate Bridge |publisher=The Rosen Publishing Group |isbn=0-8239-5016-6 |url=https://archive.org/details/goldengatebridge00owen }}</ref> San Francisco's City Engineer estimated the cost at $100 million (equivalent to ${{inflation|US|.100|1916|r=1|fmt=c}} billion today), and impractical for the time. He asked bridge engineers whether it could be built for less.<ref name="two"/> One who responded, ], was an ambitious engineer and poet who had, for his ], designed a {{convert|55|mi|km|adj=mid|-long}} ] the ].<ref name="experience">{{cite web |publisher=Public Broadcasting Service |access-date=November 7, 2007 |title=The American Experience:People & Events: Joseph Strauss (1870–1938) |url=https://www.pbs.org/wgbh/amex/goldengate/peopleevents/p_strauss.html}}</ref> At the time, Strauss had completed some 400 ]—most of which were inland—and nothing on the scale of the new project.<ref name="Denton">Denton, Harry ''et al.'' (2004) "Lonely Planet San Francisco" ''Lonely Planet'', United States, {{ISBN|1-74104-154-6}}</ref> Strauss's initial drawings<ref name="Owens"/> were for a massive ] on each side of the strait, connected by a central suspension segment, which Strauss promised could be built for $17&nbsp;million (equivalent to ${{inflation|US|17|1916|r=0|fmt=c}} million today).<ref name="two"/> Although the idea of a bridge spanning the Golden Gate was not new, the proposal that eventually took hold was made in a 1916 '']'' article by former engineering student James Wilkins.<ref name="Owens">{{cite book |author=Owens, T.O. |year=2001 |title=The Golden Gate Bridge |publisher=The Rosen Publishing Group |isbn=0-8239-5016-6 |url=https://archive.org/details/goldengatebridge00owen }}</ref> San Francisco's City Engineer estimated the cost at $100 million (equivalent to ${{inflation|US|.100|1916|r=1|fmt=c}} billion in {{inflation year|US}}), and impractical for the time. He asked bridge engineers whether it could be built for less.<ref name="two"/> One who responded, Joseph Strauss, was an ambitious engineer and poet who had, for his ], designed a {{convert|55|mi|km|adj=mid|-long}} ] the ].<ref name="experience">{{cite web |publisher=Public Broadcasting Service |access-date=November 7, 2007 |title=The American Experience:People & Events: Joseph Strauss (1870–1938) |url=https://www.pbs.org/wgbh/amex/goldengate/peopleevents/p_strauss.html |archive-date=November 17, 2007 |archive-url=https://web.archive.org/web/20071117114217/http://www.pbs.org/wgbh/amex/goldengate/peopleevents/p_strauss.html }}</ref> At the time, Strauss had completed some 400 ]—most of which were inland—and nothing on the scale of the new project.<ref name="Denton">Denton, Harry ''et al.'' (2004) "Lonely Planet San Francisco" ''Lonely Planet'', United States, {{ISBN|1-74104-154-6}}</ref> Strauss's initial drawings<ref name=":0">{{Cite web |date=June 9, 2023 |title=Engineering the Design - The History of the Design and Construction {{!}} Golden Gate |url=https://www.goldengate.org/exhibits/engineering-the-design/ |access-date=September 25, 2023 |archive-date=June 9, 2023 |archive-url=https://web.archive.org/web/20230609180719/https://www.goldengate.org/exhibits/engineering-the-design/ |url-status=bot: unknown }}</ref> were for a massive ] on each side of the strait, connected by a central suspension segment, which Strauss promised could be built for $17&nbsp;million (equivalent to ${{inflation|US|17|1916|r=0|fmt=c}} million in {{inflation year|US}}).<ref name="two"/>


Local authorities agreed to proceed only on the assurance that Strauss would alter the design and accept input from several consulting project experts.{{Citation needed|date=October 2007}} A suspension-bridge design was considered the most practical, because of recent advances in ].<ref name="two"/> A suspension-bridge design was chosen, using recent advances in bridge design and ].<ref name="two"/>


Strauss spent more than a decade drumming up support in Northern California.<ref>{{cite web |year=1999 |url=http://www.lib.berkeley.edu/news_events/exhibits/bridge/up028.html |title=Bridging the Bay: Bridges That Never Were |publisher=UC Berkeley Library |access-date=April 13, 2006 |url-status=dead |archive-url=https://web.archive.org/web/20060718052702/http://www.lib.berkeley.edu/news_events/exhibits/bridge/up028.html |archive-date=July 18, 2006 }}</ref> The bridge faced opposition, including litigation, from many sources. The ] was concerned that the bridge would interfere with ship traffic. The ] feared that a ship collision or sabotage to the bridge could block the entrance to one of its main harbors. Unions demanded guarantees that local workers would be favored for construction jobs. ], one of the most powerful business interests in California, opposed the bridge as competition to its ferry fleet and filed a lawsuit against the project, leading to a mass boycott of the ferry service.<ref name="two"/> Strauss spent more than a decade drumming up support in Northern California.<ref>{{cite web |year=1999 |url=https://www.lib.berkeley.edu/news_events/exhibits/bridge/up028.html |title=Bridging the Bay: Bridges That Never Were |publisher=UC Berkeley Library |access-date=April 13, 2006 |archive-url=https://web.archive.org/web/20060718052702/https://www.lib.berkeley.edu/news_events/exhibits/bridge/up028.html |archive-date=July 18, 2006 }}</ref> The bridge faced opposition, including litigation, from many sources. The ] was concerned that the bridge would interfere with ship traffic. The ] feared that a ship collision or sabotage to the bridge could block the entrance to one of its main harbors. Unions demanded guarantees that local workers would be favored for construction jobs. ], one of the most powerful business interests in California, opposed the bridge as competition to its ferry fleet and filed a lawsuit against the project, leading to a mass boycott of the ferry service.<ref name="two"/>


In May 1924, Colonel ] held the second hearing on the Bridge on behalf of the ] in a request to use federal land for construction. Deakyne, on behalf of the Secretary of War, approved the transfer of land needed for the bridge structure and leading roads to the "Bridging the Golden Gate Association" and both San Francisco County and Marin County, pending further bridge plans by Strauss.<ref>Miller, John B. (2002) "Case Studies in Infrastructure Delivery" ''Springer'', {{ISBN|0-7923-7652-8}}.</ref> Another ally was the fledgling ], which supported the development of roads and bridges to increase demand for automobiles.<ref name="bc"/> In May 1924, Colonel ] held the second hearing on the Bridge on behalf of the ] in a request to use federal land for construction. Deakyne, on behalf of the Secretary of War, approved the transfer of land needed for the bridge structure and leading roads to the "Bridging the Golden Gate Association" and both San Francisco County and Marin County, pending further bridge plans by Strauss.<ref>Miller, John B. (2002) "Case Studies in Infrastructure Delivery" ''Springer'', {{ISBN|0-7923-7652-8}}.</ref> Another ally was the fledgling ], which supported the development of roads and bridges to increase demand for automobiles.<ref name="bc"/>


The bridge's name was first used when the project was initially discussed in 1917 by ], city engineer of San Francisco, and Strauss. The name became official with the passage of the ] Act by the ] in 1923, creating a ] to design, build and finance the bridge.<ref>{{cite book |last=Gudde |first=Erwin G. |title=California Place Names |publisher=] |year=1949 |location=Berkeley, California |page=130 |oclc=37647557}}</ref> San Francisco and most of the counties along the ] joined the Golden Gate Bridge District, with the exception being ], whose residents opposed the bridge's construction and the traffic it would generate.<ref>{{cite web |url=http://goldengatebridge.org/research/ConstructionBldgGGB.php |title=Special District Formed&nbsp;– Golden Gate Bridge and Highway District |access-date=January 17, 2015}}</ref> The bridge's name was first used when the project was initially discussed in 1917 by ], city engineer of San Francisco, and Strauss. The name became official with the passage of the ] Act by the ] in 1923, creating a ] to design, build and finance the bridge.<ref>{{cite book |last=Gudde |first=Erwin G. |title=California Place Names |publisher=] |year=1949 |location=Berkeley, California |page=130 |oclc=37647557}}</ref> San Francisco and most of the counties along the ] joined the Golden Gate Bridge District, with the exception being ], whose residents opposed the bridge's construction and the traffic it would generate.<ref>{{cite web |url=https://goldengatebridge.org/research/ConstructionBldgGGB.php |title=Special District Formed&nbsp;– Golden Gate Bridge and Highway District |access-date=January 17, 2015 |archive-date=January 27, 2015 |archive-url=https://web.archive.org/web/20150127015653/http://goldengatebridge.org/research/ConstructionBldgGGB.php |url-status=dead }}</ref>


===Design=== ===Design===
] ] elements]]
Strauss was chief engineer in charge of overall design and construction of the bridge project.<ref name="Sigmund"/> However, because he had little understanding or experience with cable-suspension designs,<ref name="PBS">{{cite web |url=https://www.pbs.org/wgbh/amex/goldengate/peopleevents/p_strauss.html |publisher=Public Broadcasting Service |access-date=December 12, 2007 |title=People and Events: Joseph Strauss (1870–1938)}}</ref> responsibility for much of the engineering and architecture fell on other experts. Strauss's initial design proposal (two double cantilever spans linked by a central suspension segment) was unacceptable from a visual standpoint. The final graceful suspension design was conceived and championed by ], the engineer of the ] in New York City.<ref>{{cite web|title=Golden Gate Bridge Design|url=http://www.goldengatebridge.org/research/Design.php|website=goldengatebridge.org|publisher=Golden Gate Bridge, Highway and Transportation District|access-date=November 27, 2017|language=en}}</ref> Strauss was the chief engineer in charge of the overall design and construction of the bridge project.<ref name="Sigmund"/> However, because he had little understanding or experience with cable-suspension designs,<ref name="PBS">{{cite web |url=https://www.pbs.org/wgbh/amex/goldengate/peopleevents/p_strauss.html |publisher=Public Broadcasting Service |access-date=December 12, 2007 |title=People and Events: Joseph Strauss (1870–1938) |archive-date=November 17, 2007 |archive-url=https://web.archive.org/web/20071117114217/https://www.pbs.org/wgbh/amex/goldengate/peopleevents/p_strauss.html }}</ref> responsibility for much of the engineering and architecture fell on other experts. Strauss's initial design proposal (two double cantilever spans linked by a central suspension segment) was unacceptable from a visual standpoint.<ref name=":0" /> The final suspension design was conceived and championed by ], the engineer of the ] in New York City.<ref>{{cite web|title=Golden Gate Bridge Design|url=https://www.goldengatebridge.org/research/Design.php|website=goldengatebridge.org|publisher=Golden Gate Bridge, Highway and Transportation District|access-date=November 27, 2017|language=en|archive-date=December 10, 2017|archive-url=https://web.archive.org/web/20171210054905/https://goldengatebridge.org/research/Design.php}}</ref>


], a relatively unknown residential architect, designed the overall shape of the bridge towers, the lighting scheme, and ] elements, such as the tower decorations, streetlights, railing, and walkways. The famous ] color was Morrow's personal selection, winning out over other possibilities, including the US Navy's suggestion that it be painted with black and yellow stripes to ensure visibility by passing ships.<ref name="Sigmund" /><ref>{{Cite web|url=https://www.pbs.org/wgbh/americanexperience/features/goldengate-morrow/|title=Irving Morrow {{!}} American Experience {{!}} PBS|website=www.pbs.org|language=en|access-date=October 5, 2019}}</ref> Irving Morrow, a relatively unknown residential architect, designed the overall shape of the bridge towers, the lighting scheme, and Art Deco elements, such as the tower decorations, streetlights, railing, and walkways. The famous ] color was Morrow's personal selection, winning out over other possibilities, including the US Navy's suggestion that it be painted with black and yellow stripes to ensure visibility by passing ships.<ref name="Sigmund" /><ref>{{Cite web|url=https://www.pbs.org/wgbh/americanexperience/features/goldengate-morrow/|title=Irving Morrow {{!}} American Experience {{!}} PBS|website=www.pbs.org|language=en|access-date=October 5, 2019}}</ref>


Senior engineer ], collaborating remotely with Moisseiff, was the principal engineer of the project.<ref name="Moisseiff">{{cite web |url=https://www.pbs.org/wgbh/amex/goldengate/peopleevents/p_moisseiff.html |publisher=Public Broadcasting Service |title=American Experience:Leon Moisseiff (1872–1943) |access-date=November 7, 2007}}</ref> Moisseiff produced the basic structural design, introducing his "deflection theory" by which a thin, flexible roadway would flex in the wind, greatly reducing stress by transmitting forces via suspension cables to the bridge towers.<ref name="Moisseiff"/> Although the Golden Gate Bridge design has proved sound, a later Moisseiff design, the ], collapsed in a strong windstorm soon after it was completed, because of an unexpected ].<ref>{{cite journal |doi=10.1119/1.16590 |url=http://www.ketchum.org/billah/Billah-Scanlan.pdf |author1 =Billah, K. |author2=Scanlan, R. |year=1991 |title=Resonance, Tacoma Narrows Bridge Failure |series =Undergraduate Physics Textbooks |journal=] |volume=59 |issue=2 |pages=118–124}}</ref> Ellis was also tasked with designing a "bridge within a bridge" in the southern abutment, to avoid the need to demolish ], a pre–Civil War masonry fortification viewed, even then, as worthy of historic preservation. He penned a graceful steel arch spanning the fort and carrying the roadway to the bridge's southern anchorage.<ref>{{cite web |url=http://goldengatebridge.org/research/FortPoint.php |title=The Point of Fort Point: A Brief History |publisher= Golden Gate Bridge Highway and Transportation District |access-date=November 2, 2018}}</ref> Senior engineer Charles Alton Ellis, collaborating remotely with Moisseiff, was the principal engineer of the project.<ref name="Moisseiff">{{cite web |url=https://www.pbs.org/wgbh/amex/goldengate/peopleevents/p_moisseiff.html |publisher=Public Broadcasting Service |title=American Experience:Leon Moisseiff (1872–1943) |access-date=November 7, 2007 |archive-date=November 17, 2007 |archive-url=https://web.archive.org/web/20071117104634/https://www.pbs.org/wgbh/amex/goldengate/peopleevents/p_moisseiff.html }}</ref> Moisseiff produced the basic structural design, introducing his "deflection theory" by which a thin, flexible roadway would flex in the wind, greatly reducing stress by transmitting forces via suspension cables to the bridge towers.<ref name="Moisseiff"/> Although the Golden Gate Bridge design has proved sound, a later Moisseiff design, the ], collapsed in a strong windstorm soon after it was completed, because of an unexpected ].<ref>{{cite journal |doi=10.1119/1.16590 |url=https://www.ketchum.org/billah/Billah-Scanlan.pdf |archive-url=https://web.archive.org/web/20000919163924/https://www.ketchum.org/billah/Billah-Scanlan.pdf |archive-date=September 19, 2000 |url-status=live |author1 =Billah, K. |author2=Scanlan, R. |year=1991 |title=Resonance, Tacoma Narrows Bridge Failure |series =Undergraduate Physics Textbooks |journal=] |volume=59 |issue=2 |pages=118–124}}</ref> Ellis was also tasked with designing a "bridge within a bridge" in the southern abutment, to avoid the need to demolish Fort Point, a pre–Civil War masonry fortification viewed, even then, as worthy of historic preservation. He penned a graceful steel arch spanning the fort and carrying the roadway to the bridge's southern anchorage.<ref>{{cite web |url=https://goldengatebridge.org/research/FortPoint.php |title=The Point of Fort Point: A Brief History |publisher=Golden Gate Bridge Highway and Transportation District |access-date=November 2, 2018 |archive-date=November 21, 2018 |archive-url=https://web.archive.org/web/20181121022951/http://goldengatebridge.org/research/FortPoint.php |url-status=dead }}</ref>


] ]
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Ellis was a Greek scholar and mathematician who at one time was a University of Illinois professor of engineering despite having no engineering degree. He eventually earned a degree in civil engineering from the University of Illinois prior to designing the Golden Gate Bridge and spent the last twelve years of his career as a professor at Purdue University. He became an expert in structural design, writing the standard textbook of the time.<ref name="ellis"/> Ellis did much of the technical and theoretical work that built the bridge, but he received none of the credit in his lifetime. In November 1931, Strauss fired Ellis and replaced him with a former subordinate, Clifford Paine, ostensibly for wasting too much money sending telegrams back and forth to Moisseiff.<ref name="ellis"/> Ellis, obsessed with the project and unable to find work elsewhere during the Depression, continued working 70 hours per week on an unpaid basis, eventually turning in ten volumes of hand calculations.<ref name="ellis"/> Ellis was a Greek scholar and mathematician who at one time was a University of Illinois professor of engineering despite having no engineering degree. He eventually earned a degree in civil engineering from the University of Illinois prior to designing the Golden Gate Bridge and spent the last twelve years of his career as a professor at Purdue University. He became an expert in structural design, writing the standard textbook of the time.<ref name="ellis"/> Ellis did much of the technical and theoretical work that built the bridge, but he received none of the credit in his lifetime. In November 1931, Strauss fired Ellis and replaced him with a former subordinate, Clifford Paine, ostensibly for wasting too much money sending telegrams back and forth to Moisseiff.<ref name="ellis"/> Ellis, obsessed with the project and unable to find work elsewhere during the Depression, continued working 70 hours per week on an unpaid basis, eventually turning in ten volumes of hand calculations.<ref name="ellis"/>


With an eye toward self-promotion and posterity, Strauss downplayed the contributions of his collaborators who, despite receiving little recognition or compensation,<ref name=PBS/> are largely responsible for the final form of the bridge. He succeeded in having himself credited as the person most responsible for the design and vision of the bridge.<ref name="ellis">{{cite web |url=https://www.pbs.org/wgbh/amex/goldengate/peopleevents/p_ellis.html |access-date=November 7, 2007 |publisher=Public Broadcasting Service |title=The American Experience:Charles Alton Ellis (1876–1949)}}</ref> Only much later were the contributions of the others on the design team properly appreciated.<ref name="ellis"/> In May 2007, the Golden Gate Bridge District issued a formal report on 70 years of stewardship of the famous bridge and decided to give Ellis major credit for the design of the bridge. With an eye toward self-promotion and posterity, Strauss downplayed the contributions of his collaborators who, despite receiving little recognition or compensation,<ref name=PBS/> are largely responsible for the final form of the bridge. He succeeded in having himself credited as the person most responsible for the design and vision of the bridge.<ref name="ellis">{{cite web |url=https://www.pbs.org/wgbh/amex/goldengate/peopleevents/p_ellis.html |access-date=November 7, 2007 |publisher=Public Broadcasting Service |title=The American Experience:Charles Alton Ellis (1876–1949) |archive-date=March 27, 2009 |archive-url=https://web.archive.org/web/20090327122238/https://www.pbs.org/wgbh/amex/goldengate/peopleevents/p_ellis.html }}</ref> Only much later were the contributions of the others on the design team properly appreciated.<ref name="ellis"/> In May 2007, the Golden Gate Bridge District issued a formal report on 70 years of stewardship of the famous bridge and decided to give Ellis major credit for the design of the bridge.


{{Clear}} {{Clear}}
{{Wide image|Golden-Gate-Bridge.svg|1000px|Panorama showing the height, depth, and length of the span from end to end, looking west}} {{Wide image|Golden-Gate-Bridge.svg|1000px|Panorama showing the height, depth, and length of the span from end to end, looking west}}
{{Wide image|Golden Gate Bridge Dec 15 2015 by D Ramey Logan.jpg|1000px|Panorama of the Golden Gate Bridge at sunset, as seen from just north of ]}} {{Wide image|Golden Gate Bridge Dec 15 2015 by Don Ramey Logan.jpg|1000px|Panorama of the Golden Gate Bridge at sunset, as seen from just north of ]}}


===Finance=== ===Finance===
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===Construction=== ===Construction===
Construction began on January 5, 1933.<ref name="two"/> The project cost more than $35&nbsp;million<ref>{{cite web |url=http://www.lib.berkeley.edu/news_events/bridge/gate_2.html |title=Bridging the Bay: Bridges That Never Were |publisher=UC Berkeley Library |access-date=February 19, 2007}}</ref> (${{format price|{{Inflation|US-GDP|35000000|1935}}}} in {{Inflation-year|US-GDP}} dollars{{Inflation-fn|US-GDP}}), and was completed ahead of schedule and $1.3 million under budget (equivalent to ${{inflation|US|1.3|1935|r=1|fmt=c}} million today).<ref>{{cite web |title=72 years ago today, iconic Golden Gate Bridge finished construction ahead of schedule & $1.3 million under budget |url=https://www.worldculturepictorial.com/blog/content/72-years-ago-today-iconic-golden-gate-bridge-finished-construction-ahead-schedule-13-million |date=May 27, 2009 |access-date=April 10, 2013}}</ref> Construction began on January 5, 1933.<ref name="two"/> The project cost more than $35&nbsp;million<ref>{{cite web |url=https://www.lib.berkeley.edu/news_events/bridge/gate_2.html |title=Bridging the Bay: Bridges That Never Were |publisher=UC Berkeley Library |access-date=February 19, 2007}}</ref> (${{format price|{{Inflation|US-GDP|35000000|r=-7|1935}}}} in {{Inflation-year|US-GDP}} dollars{{Inflation-fn|US-GDP}}), and was completed ahead of schedule and $1.3 million under budget (equivalent to ${{inflation|US|1.3|1935|r=1|fmt=c}} million today).<ref>{{cite web |title=72 years ago today, iconic Golden Gate Bridge finished construction ahead of schedule & $1.3 million under budget |url=https://www.worldculturepictorial.com/blog/content/72-years-ago-today-iconic-golden-gate-bridge-finished-construction-ahead-schedule-13-million |date=May 27, 2009 |access-date=April 10, 2013}}</ref>
The Golden Gate Bridge construction project was carried out by the McClintic-Marshall Construction Co., a subsidiary of ] founded by Howard H. McClintic and Charles D. Marshall, both of ]. The Golden Gate Bridge construction project was carried out by the McClintic-Marshall Construction Co., a subsidiary of ] founded by Howard H. McClintic and Charles D. Marshall, both of ].


]. A total of 1.2 million steel rivets hold the bridge's two towers together.]] ] replaced during the seismic retrofit after the ]. A total of 1.2 million steel rivets hold the bridge's two towers together.]]


Strauss remained head of the project, overseeing day-to-day construction and making some groundbreaking contributions. A graduate of the ], he placed a brick from his alma mater's demolished McMicken Hall in the south anchorage before the concrete was poured.
Strauss remained head of the project, overseeing day-to-day construction and making some groundbreaking contributions. A graduate of the ], he placed a brick from his alma mater's demolished McMicken Hall in the south anchorage before the concrete was poured. He innovated the use of movable safety netting beneath the construction site, which saved the lives of many otherwise-unprotected ironworkers. Of eleven men killed from falls during construction, ten were killed on February 17, 1937, when the bridge was near completion and the net failed under the stress of a scaffold that had fallen.<ref>{{Cite journal |title=Life On The American Newsfront: Ten Men Fall To Death From Golden Gate Bridge |journal=Life |pages=20–21 |date=March 1, 1937 |url=https://books.google.com/books?id=TFEEAAAAMBAJ&pg=PA20}}</ref> The workers' platform that was attached to a rolling hanger on a track collapsed when the bolts that were connected to the track were too small and the amount of weight was too great to bear. The platform fell into the safety net, but was too heavy and the net gave way. Two out of the twelve workers survived the {{convert|200|ft|m|adj=on}} fall into the icy waters, including the 37-year-old foreman, Slim Lambert. Nineteen others who were saved by the net over the course of construction became members of the ].<ref>{{cite web |url=http://goldengatebridge.org/research/facts.php#HalfwayHell |title=Frequently Asked Questions about the Golden Gate Bridge |publisher=Golden Gate Bridge, Highway and Transportation District. |access-date=November 7, 2007}}</ref><!-- to do: review contributions of others, design approval and adoption -->


Strauss also innovated the use of movable safety netting beneath the men working, which saved many lives. Nineteen men saved by the nets over the course of the project formed the ]. Nonetheless, eleven men were killed in falls, ten on February 17, 1937, when a scaffold (secured by undersized bolts) with twelve men on it fell into and broke through the safety net; two of the twelve survived the {{convert|200|ft|m|adj=on}} fall into the water.<ref>{{Cite magazine |title=Life On The American Newsfront: Ten Men Fall To Death From Golden Gate Bridge |magazine=Life |pages=20–21 |date=March 1, 1937 |url=https://books.google.com/books?id=TFEEAAAAMBAJ&pg=PA20}}</ref><ref>{{cite web |url=https://goldengatebridge.org/research/facts.php#HalfwayHell |title=Frequently Asked Questions about the Golden Gate Bridge |publisher=Golden Gate Bridge, Highway and Transportation District. |access-date=November 7, 2007 |archive-date=November 5, 2007 |archive-url=https://web.archive.org/web/20071105064349/http://goldengatebridge.org/research/facts.php#HalfwayHell |url-status=dead }}</ref><!-- to do: review contributions of others, design approval and adoption -->
The project was finished and opened May 27, 1937. The ] ] was then included in the southeastern end of the Golden Gate Bridge, adjacent to the tourist plaza which was renovated in 2012.<ref name=King>
{{cite news |url=http://www.sfgate.com/bayarea/place/article/Golden-Gate-Bridge-s-plaza-flawed-but-workable-3585446.php |title=Golden Gate Bridge's Plaza Flawed but Workable |work=] |date=May 25, 2012 |first=John |last=King}}</ref> The Bridge Round House, an ] design by ] completed in 1938, has been popular throughout the years as a starting point for various commercial tours of the bridge and an unofficial gift shop.<ref name=Kligman>
{{cite web |url=http://www.pgecurrents.com/2012/05/25/from-sea-to-shining-sea-pge%E2%80%99s-earley-joins-tribute-to-golden-gate-bridge/ |title=From Sea to Shining Sea: PG&E's Earley Joins Tribute to Golden Gate Bridge |work=Currents |publisher=] |date=May 25, 2012 |first=David |last=Kligman}}</ref> The diner was renovated in 2012<ref name=King/> and the gift shop was then removed as a new, official gift shop has been included in the adjacent plaza.<ref name=Kligman/>


The bridge opened May 27, 1937.<ref>{{Cite web|url=https://www.goldengate.org/bridge/history-research/moments-events/key-dates/|title=Key Dates - Moments & Events &#124; Golden Gate|website=www.goldengate.org}}</ref>
During the bridge work, the Assistant Civil Engineer of California ] had overseen the entire iron work of the bridge as well as half of the bridge's road work.<ref>San Francisco Examiner. May 27, 1982. No. 147, p. 2. ''Golden Gate Bridge''&nbsp;– 45th anniversary of completion.</ref> With the death of ] in April 2012, all workers involved in the original construction are now deceased.

The ] ] was then included in the southeastern end of the Golden Gate Bridge, adjacent to the tourist plaza which was renovated in 2012.<ref name=King>
{{cite news |url=https://www.sfgate.com/bayarea/place/article/Golden-Gate-Bridge-s-plaza-flawed-but-workable-3585446.php |title=Golden Gate Bridge's Plaza Flawed but Workable |work=] |date=May 25, 2012 |first=John |last=King}}</ref> The Round House Café, an Art Deco design by ] completed in 1938, has been popular throughout the years as a starting point for various commercial tours of the bridge and an unofficial gift shop.<ref name=Kligman>{{cite web |url=https://www.pgecurrents.com/2012/05/25/from-sea-to-shining-sea-pge%E2%80%99s-earley-joins-tribute-to-golden-gate-bridge/ |title=From Sea to Shining Sea: PG&E's Earley Joins Tribute to Golden Gate Bridge |work=Currents |publisher=] |date=May 25, 2012 |first=David |last=Kligman |access-date=April 12, 2013 |archive-date=October 22, 2013 |archive-url=https://web.archive.org/web/20131022021855/https://www.pgecurrents.com/2012/05/25/from-sea-to-shining-sea-pge%E2%80%99s-earley-joins-tribute-to-golden-gate-bridge/ }}</ref> The diner was renovated in 2012<ref name=King/> and the gift shop was then removed as a new, official gift shop has been included in the adjacent plaza.<ref name=Kligman/>

During the bridge work, the Assistant Civil Engineer of California ] had overseen the entire iron work of the bridge as well as half of the bridge's road work.<ref>San Francisco Examiner. May 27, 1982. No. 147, p. 2. ''Golden Gate Bridge''&nbsp;– 45th anniversary of completion.</ref>

==== Contributors ====
Plaque of the major contributors to the Golden Gate Bridge lists contractors, engineering-staff, directors and officers:<ref>{{Citation |last=Castaldo |first=Gaetano |title=Plaque of the major Contributors to the Golden Gate Bridge, San Francisco, California, USA |date=October 24, 2013 |url=https://www.flickr.com/photos/tanzeus/11272591214/ |access-date=June 8, 2022}}</ref>
{{div col}}
'''Contractors'''

* Foundations - ]
* Anchorages - ]
* Structural steel - Main span - ]
* Approach steel - J.H. Pomeroy & Company Incorporated - Raymond Concrete Pile Company
* Cables - ]
* Electrical work - Alta Electric and Mechanical Company Incorporated
* Bridge deck - Pacific Bridge Company
* Presidio Approach Roads and Viaducts - Easton & Smith
* Toll Plaza - Barrett & Hilp

'''Engineering staff'''

* Chief engineer - Joseph B. Strauss
* Principal assistant engineer - Clifford E. Paine
* Resident engineer - Russell Cone
* Assistant engineer - Charles Clarahan Jr., Dwight N. Wetherell
* Consulting engineer - O.H. Ammann, Charles Derleth Jr., Leon S. Moisseiff
* Consulting traffic engineer - Sydney W. Taylor Jr.
* Consulting architect - Irving F. Morrow
* Consulting geologist - Andrew C. Lawson, Allan E. Sedgwick

'''Directors'''

* San Francisco - William P. Filmer, Richard J. Welch, Warren Shannon, Hugo D. Newhouse, Arthur M. Brown Jr., John P. McLaughlin, William D. Hadeler, C.A. Henry, Francis V. Keesling, William P. Stanton, George T. Cameron
* Marin County - Robert H. Trumbull, Harry Lutgens
* Napa County - Thomas Maxwell
* Sonoma County - Frank P. Doyle, Joseph A. McMinn
* Mendocino County - A. R. O'Brien
* Del Norte County - Henry Westbrook Jr., Milton M. McVay

'''Officers'''

* President - William P. Filmer
* Vice President - Robert H. Trumbull
* General manager - James Reed, Alan McDonald
* Chief engineer - Joseph B. Strauss
* Secretary - W. W. Felt Jr.
* Auditor - Roy S. West, John R. Ruckstell
* Attorney - George H. Harlan
{{div col end}}


===Torsional bracing retrofit=== ===Torsional bracing retrofit===
On December 1, 1951, a windstorm revealed swaying and rolling instabilities of the bridge, resulting in its closure.<ref>{{cite news |last1=Van Niekerken |first1=Bill |title=When the Golden Gate Bridge was closed by a violent storm |url=https://www.sfchronicle.com/thetake/article/When-the-Golden-Gate-Bridge-was-closed-by-a-7971512.php |access-date=August 2, 2020 |date=June 13, 2016}}</ref> In 1953 and 1954, the bridge was retrofitted with lateral and diagonal bracing that connected the lower chords of the two side trusses. This bracing stiffened the bridge deck in torsion so that it would better resist the types of twisting that had destroyed the ] in 1940.<ref>{{Cite web|url=http://goldengate.org/exhibits/bridge-deck-torsional-resistance-retrofit.php|title=Resisting the Twisting|website=Golden Gate Bridge Highway and Transportation District|access-date=July 29, 2019}}</ref> On December 1, 1951, a windstorm revealed swaying and rolling instabilities of the bridge, resulting in its closure.<ref>{{cite news |last1=Van Niekerken |first1=Bill |title=When the Golden Gate Bridge was closed by a violent storm |url=https://www.sfchronicle.com/thetake/article/When-the-Golden-Gate-Bridge-was-closed-by-a-7971512.php |access-date=August 2, 2020 |date=June 13, 2016}}</ref> In 1953 and 1954, the bridge was retrofitted with lateral and diagonal bracing that connected the lower chords of the two side trusses. This bracing stiffened the bridge deck in torsion so that it would better resist the types of twisting that had destroyed the ] in 1940.<ref>{{Cite web|url=https://goldengate.org/exhibits/bridge-deck-torsional-resistance-retrofit.php|title=Resisting the Twisting|website=Golden Gate Bridge Highway and Transportation District|access-date=July 29, 2019}}</ref>


===Bridge Deck Replacement (1982–1986)=== ===Bridge deck replacement (1982–1986)===
The original bridge used a ] ]. ] carried by fog or mist reached the ], causing ] and concrete ]ing. From 1982 to 1986, the original bridge deck, in 747 sections, was systematically replaced with a 40% lighter, and stronger, steel ] panels, over 401 nights without closing the roadway completely to traffic. The roadway was also widened by two feet, resulting in outside curb lane width of 11 feet, instead of 10 feet for the inside lanes. This deck replacement was the bridge's greatest engineering project since it was built and cost over $68 million.<ref>{{cite web |title=Bridge Deck Replacement (1982–1986) |url=https://www.goldengate.org/bridge/bridge-maintenance/major-bridge-improvements/ |website=goldengate.org |access-date=August 2, 2020}}</ref> The original bridge used a ] ]. ] carried by fog or mist reached the ], causing ] and concrete ]ing. From 1982 to 1986, the original bridge deck, in 747 sections, was systematically replaced with a 40% lighter, and stronger, steel ] panels, over 401 nights without closing the roadway completely to traffic. The roadway was also widened by two feet, resulting in outside curb lane width of 11 feet, instead of 10 feet for the inside lanes. This deck replacement was the bridge's greatest engineering project since it was built and cost over $68 million.<ref>{{cite web |title=Bridge Deck Replacement (1982–1986) |url=https://www.goldengate.org/bridge/bridge-maintenance/major-bridge-improvements/ |website=goldengate.org |access-date=August 2, 2020}}</ref>


===Opening festivities, and 50th and 75th anniversaries=== ===Opening festivities, and 50th and 75th anniversaries===
] ]
]]] ]]]
The bridge-opening celebration began on May 27, 1937, and lasted for one week. The day before vehicle traffic was allowed, 200,000 people crossed either on foot or on roller skates.<ref name="two"/> On opening day, Mayor ] and other officials rode the ferry to Marin, then crossed the bridge in a motorcade past three ceremonial "barriers," the last a blockade of ] who required Joseph Strauss to present the bridge to the Highway District before allowing him to pass. An official song, "]," was chosen to commemorate the event. Strauss wrote a poem that is now on the Golden Gate Bridge entitled "The Mighty Task is Done." The next day, ] pushed a button in Washington, D.C. signaling the official start of vehicle traffic over the Bridge at noon. As the celebration got out of hand there was a small riot in the uptown ] area. Weeks of civil and cultural activities called "the Fiesta" followed. A statue of Strauss was moved in 1955 to a site near the bridge.<ref name="Owens"/> The bridge-opening celebration in 1937 began on May&nbsp;27 and lasted for one week.<ref name=optdy>{{cite news |url=https://news.google.com/newspapers?id=6rgzAAAAIBAJ&sjid=1e4HAAAAIBAJ&pg=5919%2C986451 |work=Lodi News-Sentinel |location=(California) |agency=United Press |title=Bay Bridge fete opens today |date=May 27, 1937 |page=1}}</ref> The day before vehicle traffic was allowed, 200,000 people crossed either on foot or on roller skates.<ref name="two"/><ref name=trtggsr>{{cite news |url=https://news.google.com/newspapers?id=LhtWAAAAIBAJ&sjid=suMDAAAAIBAJ&pg=4122%2C3915984 |work=Spokesman-Review |location=(Spokane, Washington) |agency=Associated Press |title=Thousands rush to Golden Gate |date=May 28, 1937 |page=1}}</ref> On opening day, Mayor ] and other officials rode the ferry to Marin, then crossed the bridge in a motorcade past three ceremonial "barriers," the last a blockade of ] who required Joseph Strauss to present the bridge to the Highway District before allowing him to pass. An official song, "]," was chosen to commemorate the event. Strauss wrote a poem that is now on the Golden Gate Bridge entitled "The Mighty Task is Done." The next day, ] pushed a button in Washington, D.C. signaling the official start of vehicle traffic over the Bridge at noon. Weeks of civil and cultural activities called "the Fiesta" followed. A statue of Strauss was moved in 1955 to a site near the bridge.<ref name="Owens"/>


In May 1987, as part of the 50th anniversary celebration, the Golden Gate Bridge district again closed the bridge to automobile traffic and allowed pedestrians to cross the bridge. However, this celebration attracted 750,000 to 1,000,000 people, and ineffective crowd control meant the bridge became congested with roughly 300,000 people, causing the center span of the bridge to flatten out under the weight.<ref>{{cite web |url=http://www.mercurynews.com/ci_20695952/day-golden-gate-bridge-flattened |title=The Day the Golden Gate Bridge Flattened |author=Tung, Stephen |date=May 23, 2012 |work=San Jose Mercury News |access-date=January 17, 2016}}</ref> Although the bridge is designed to flex in that way under heavy loads, and was estimated not to have exceeded 40% of the yielding stress of the suspension cables,<ref>{{cite web |url=http://gndec.ac.in/~librarian/book/Book%20Cds/25885/PDF/CASES/CABLES/GOLDEN_G.PDF |archive-url=https://web.archive.org/web/20111011090153/http://gndec.ac.in/~librarian/book/Book%20Cds/25885/PDF/CASES/CABLES/GOLDEN_G.PDF |archive-date=October 11, 2011 |title=THE GOLDEN GATE BRIDGE |author1 =Pollalis, Spiro N. |author2 =Otto, Caroline |year=1990 |publisher=Harvard Design School |access-date=April 3, 2011}}</ref> bridge officials stated that uncontrolled pedestrian access was not being considered as part of the 75th anniversary on Sunday, May 27, 2012,<ref name="NYT">{{cite news |url=https://www.nytimes.com/1987/05/26/us/golden-gate-crowd-made-bridge-bend.html |title=Golden Gate Crowd Made Bridge Bend |author=McCarthy, Terrence |date=May 26, 1987 |work=The New York Times |access-date=April 3, 2011}}</ref><ref name="MIJ">{{cite web |url=http://www.marinij.com/marinnews/ci_15588533 |title=Golden Gate Bridge officials nix walk for 75th anniversary |author=Prado, Mark |date=July 23, 2010 |work=Marin Independent Journal |access-date=April 3, 2011 |archive-url=https://web.archive.org/web/20101227010207/http://www.marinij.com/marinnews/ci_15588533 |archive-date=December 27, 2010 |url-status=dead }}</ref><ref name="GSA">{{cite web |url=http://goldengatebridge75.org/celebrate/golden-gate-festival.html |title=Golden Gate Festival :: Golden Gate Bridge 75th Anniversary |work=Golden Gate National Parks Conservancy |access-date=March 21, 2012}}</ref> because of the additional law enforcement costs required "since ]"<ref name="WSJ-BayArea">{{cite news |url=https://www.wsj.com/articles/SB10001424052702304019404577418440018082040 |title=A Historian's Long View of Golden Gate Bridge |work=The Wall Street Journal |date=May 24, 2012 |access-date=August 31, 2013 |author=Fowler, Geoffrey A. |pages=A13C}}</ref> As part of the fiftieth anniversary celebration in 1987, the Golden Gate Bridge district again closed the bridge to automobile traffic and allowed pedestrians to cross it on May&nbsp;24. This Sunday morning celebration attracted 750,000 to 1,000,000 people, and ineffective crowd control meant the bridge became congested with roughly 300,000 people, causing the center span of the bridge to flatten out under the weight.<ref>{{cite web |url=http://www.mercurynews.com/ci_20695952/day-golden-gate-bridge-flattened |title=The Day the Golden Gate Bridge Flattened |author=Tung, Stephen |date=May 23, 2012 |work=San Jose Mercury News |access-date=January 17, 2016}}</ref><ref name=qmcas>{{cite news |url=https://news.google.com/newspapers?id=lPdVAAAAIBAJ&sjid=fuEDAAAAIBAJ&pg=6130%2C6367545 |work=Eugene Register-Guard |location=(Oregon) |agency=Associated Press |title=1 million celebrate a symbol |date=May 25, 1987 |page=1A}}</ref><ref name=hgbggss>{{cite news |url=https://news.google.com/newspapers?id=-LAzAAAAIBAJ&sjid=jDIHAAAAIBAJ&pg=7001%2C3189935 |work=Lodi News-Sentinel |location=(California) |agency=UPI |title=Human gridlock brought Golden Gate Bridge to a standstill
|date=May 26, 1987 |page=3}}</ref> Although the bridge is designed to flex in that way under heavy loads, and was estimated not to have exceeded 40% of the yielding stress of the suspension cables,<ref>{{cite web |url=http://gndec.ac.in/~librarian/book/Book%20Cds/25885/PDF/CASES/CABLES/GOLDEN_G.PDF |archive-url=https://web.archive.org/web/20111011090153/http://gndec.ac.in/~librarian/book/Book%20Cds/25885/PDF/CASES/CABLES/GOLDEN_G.PDF |archive-date=October 11, 2011 |title=The Golden Gate Bridge |author1 =Pollalis, Spiro N. |author2 =Otto, Caroline |year=1990 |publisher=Harvard Design School |access-date=April 3, 2011}}</ref> bridge officials stated that uncontrolled pedestrian access was not being considered as part of the 75th anniversary on Sunday, May 27, 2012,<ref name="NYT">{{cite news |url=https://www.nytimes.com/1987/05/26/us/golden-gate-crowd-made-bridge-bend.html |title=Golden Gate Crowd Made Bridge Bend |author=McCarthy, Terrence |date=May 26, 1987 |work=The New York Times |access-date=April 3, 2011}}</ref><ref name="MIJ">{{cite web |url=http://www.marinij.com/marinnews/ci_15588533 |title=Golden Gate Bridge officials nix walk for 75th anniversary |author=Prado, Mark |date=July 23, 2010 |work=Marin Independent Journal |access-date=April 3, 2011 |archive-url=https://web.archive.org/web/20101227010207/http://www.marinij.com/marinnews/ci_15588533 |archive-date=December 27, 2010 }}</ref><ref name="GSA">{{cite web |url=http://goldengatebridge75.org/celebrate/golden-gate-festival.html |title=Golden Gate Festival :: Golden Gate Bridge 75th Anniversary |work=Golden Gate National Parks Conservancy |access-date=March 21, 2012}}</ref> because of the additional law enforcement costs required "since ]"<ref name="WSJ-BayArea">{{cite news |url=https://www.wsj.com/articles/SB10001424052702304019404577418440018082040 |title=A Historian's Long View of Golden Gate Bridge |work=The Wall Street Journal |date=May 24, 2012 |access-date=August 31, 2013 |author=Fowler, Geoffrey A. |pages=A13C}}</ref>


<gallery mode="packed" heights="220"> <gallery mode="packed" heights="190">
File:GoldenGateBridge openingday.jpg|A pedestrian poses at the old railing on opening day, 1937. File:GoldenGateBridge openingday.jpg|A pedestrian poses at the old railing on opening day, 1937.
File:Golden Gate Bridge Opening - (1936).ogg|Opening of the Golden Gate Bridge File:Golden Gate Bridge Opening - (1936).ogg|Opening of the Golden Gate Bridge
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] ]


Until 1964, the Golden Gate Bridge had the ] in the world, at {{convert|4,200|ft|m}}. Since 1964 its main span length has been surpassed by fifteen bridges; it now has the second-longest main span in the ], after the ] in New York City. The total length of the Golden Gate Bridge from ] to abutment is {{convert|8,981|ft|m}}.<ref name = "factsGGBDesign">{{cite web|title=Bridge Design and Construction Statistics|url=http://goldengatebridge.org/research/factsGGBDesign.php|website=goldengatebridge.org|publisher=Golden Gate Bridge, Highway and Transportation District|access-date=November 27, 2017|language=en}}</ref> Until 1964, the Golden Gate Bridge had the longest suspension bridge main span in the world, at {{convert|4,200|ft|m|sigfig=3}}. Since 1964 its main span length has been ]; it now has the second-longest main span in the ], after the ] in New York City. The total length of the Golden Gate Bridge from ] to abutment is {{convert|8,981|ft|m}}.<ref name = "factsGGBDesign">{{cite web|title=Bridge Design and Construction Statistics|url=http://goldengatebridge.org/research/factsGGBDesign.php|website=goldengatebridge.org|publisher=Golden Gate Bridge, Highway and Transportation District|access-date=November 27, 2017|language=en|archive-date=March 4, 2011|archive-url=https://web.archive.org/web/20110304130356/http://www.goldengatebridge.org/research/factsGGBDesign.php|url-status=dead}}</ref>


The Golden Gate Bridge's clearance above high water averages {{convert|220|ft|m}} while its towers, at {{convert|746|ft|m}} above the water,<ref name = "factsGGBDesign"/> were the world's tallest on a suspension bridge until 1993 when it was surpassed by the ], in Mexico. The Golden Gate Bridge's clearance above high water averages {{convert|220|ft|m}} while its towers, at {{convert|746|ft|m}} above the water,<ref name = "factsGGBDesign"/> were the world's tallest on a suspension bridge until 1993 when it was surpassed by the ], in Mexico.


The weight of the roadway is hung from 250 pairs of vertical suspender ropes, which are attached to two main ]. The main cables pass over the two main towers and are fixed in concrete at each end. Each cable is made of 27,572 strands of wire. The total length of galvanized steel ] used to fabricate both main cables is estimated to be {{convert|80,000|mi|km}}.<ref name = "factsGGBDesign"/> Each of the bridge's two towers has approximately 600,000 ]s.<ref>. ''goldengatebridge.org''. Golden Gate Bridge, Highway and Transportation District. Retrieved November 5, 2018.</ref> The weight of the roadway is hung from 250 pairs of vertical suspender ropes, which are attached to two main ]. The main cables pass over the two main towers and are fixed in concrete at each end. Each cable is made of 27,572 strands of wire. The total length of galvanized steel ] used to fabricate both main cables is estimated to be {{convert|80,000|mi|km}}.<ref name = "factsGGBDesign"/> Each of the bridge's two towers has approximately 600,000 ]s.<ref> {{Webarchive|url=https://web.archive.org/web/20150810050111/http://goldengatebridge.org/research/facts.php#RivetsinTower |date=August 10, 2015 }}. ''goldengatebridge.org''. Golden Gate Bridge, Highway and Transportation District. Retrieved November 5, 2018.</ref>


In the 1960s, when the ] system (BART) was being planned, the engineering community had conflicting opinions about the feasibility of running train tracks north to Marin County over the bridge.<ref>{{cite web |title=A History of BART |url=https://www.bart.gov/about/history |access-date=November 5, 2018}}</ref> In June 1961, consultants hired by BART completed a study that determined the bridge's suspension section was capable of supporting service on a new lower deck.<ref name="1961Report">{{cite web |title=Rapid Transit for the San Francisco Bay Area |url=http://libraryarchives.metro.net/DPGTL/bart/1961-parsons-engineering-report-to-sf-bart-district.pdf |website=LA Metro Library |publisher=Parsons Brinkerhoff / Tudor / Bechtel |access-date=July 21, 2018}}</ref> In July 1961, one of the bridge's consulting engineers, Clifford Paine, disagreed with their conclusion.<ref>{{Cite web|url=https://www.marinij.com/2010/08/07/did-marin-lose-out-on-bart/|title=Did Marin lose out on BART?|last=Prado|first=Mark|date=August 7, 2010|website=Marin Independent Journal|access-date=May 3, 2019}}</ref> In January 1962, due to more conflicting reports on feasibility, the bridge's board of directors appointed an engineering review board to analyze all the reports. The review board's report, released in April 1962, concluded that running BART on the bridge was not advisable.<ref>{{cite report |last1=Ammann |first1=Othmar H. |author-link1=Othmar_Ammann |last2=Masters |first2=Frank M. |last3=Newmark |first3=Nathan M. |title=Report on Proposed Installation of Rapid Transit Trains on Golden Gate Bridge |date=April 1962 |publisher=Golden Gate Bridge And Highway District |page= 8 |url=https://catalog.hathitrust.org/Record/101668914 }}</ref> In the 1960s, when the ] system (BART) was being planned, the engineering community had conflicting opinions about the feasibility of running train tracks north to Marin County over the bridge.<ref>{{cite web |title=A History of BART |url=https://www.bart.gov/about/history |access-date=November 5, 2018}}</ref> In June 1961, consultants hired by BART completed a study that determined the bridge's suspension section was capable of supporting service on a new lower deck.<ref name="1961Report">{{cite web |title=Rapid Transit for the San Francisco Bay Area |url=http://libraryarchives.metro.net/DPGTL/bart/1961-parsons-engineering-report-to-sf-bart-district.pdf |archive-url=https://web.archive.org/web/20160917014219/http://libraryarchives.metro.net/DPGTL/bart/1961-parsons-engineering-report-to-sf-bart-district.pdf |archive-date=September 17, 2016 |url-status=live |website=LA Metro Library |publisher=Parsons Brinckerhoff / Tudor / Bechtel |access-date=July 21, 2018}}</ref> In July 1961, one of the bridge's consulting engineers, Clifford Paine, disagreed with their conclusion.<ref>{{Cite web|url=https://www.marinij.com/2010/08/07/did-marin-lose-out-on-bart/|title=Did Marin lose out on BART?|last=Prado|first=Mark|date=August 7, 2010|website=Marin Independent Journal|access-date=May 3, 2019}}</ref> In January 1962, due to more conflicting reports on feasibility, the bridge's board of directors appointed an engineering review board to analyze all the reports. The review board's report, released in April 1962, concluded that running BART on the bridge was not advisable.<ref>{{cite report |last1=Ammann |first1=Othmar H. |author-link1=Othmar Ammann |last2=Masters |first2=Frank M. |last3=Newmark |first3=Nathan M. |title=Report on Proposed Installation of Rapid Transit Trains on Golden Gate Bridge |date=April 1962 |publisher=Golden Gate Bridge And Highway District |page= 8 |url=https://catalog.hathitrust.org/Record/101668914 }}</ref>


==Aesthetics== ==Aesthetics==
Aesthetics was the foremost reason why the first design of Joseph Strauss was rejected. Upon re-submission of his bridge construction plan, he added details, such as lighting, to outline the bridge's cables and towers.<ref>{{cite journal |author1 =Rodriguez, Joseph A. |year=2000 |title=Planning |author2 =Urban Rivalry in the San Francisco Bay Area in the 1930s |journal=Journal of Planning Education and Research |volume=20 |pages=66–76 |doi=10.1177/073945600128992609|s2cid=143841247 }}</ref> In 1999, it was ranked fifth on the '']'' by the ]. Aesthetics was the foremost reason why the first design of Joseph Strauss was rejected. Upon re-submission of his bridge construction plan, he added details, such as lighting, to outline the bridge's cables and towers.<ref>{{cite journal |author1 =Rodriguez, Joseph A. |year=2000 |title=Planning |author2 =Urban Rivalry in the San Francisco Bay Area in the 1930s |journal=Journal of Planning Education and Research |volume=20 |pages=66–76 |doi=10.1177/073945600128992609|s2cid=143841247 }}</ref> In 1999, it was ranked fifth on the '']'' by the ].


The color of the bridge is officially an orange ] called '']''.<ref name="orangePaint">{{cite web |url=http://goldengatebridge.org/research/factsGGBIntOrngPaint.php |title=Golden Gate Bridge: Construction Data |publisher=Golden Gate Bridge, Highway and Transportation District |access-date=August 20, 2007}}</ref> The color was selected by consulting architect Irving Morrow<ref>{{cite web |last=Stamberg |first=Susan |title=The Golden Gate Bridge's Accidental Color |url=https://www.npr.org/2011/04/26/135150942/the-golden-gate-bridges-accidental-color |publisher=NPR |access-date=April 27, 2011}}</ref> because it complements the natural surroundings and enhances the bridge's visibility in fog.<ref name="StClair">{{Cite book|title=The Secret Lives of Colour|last=St. Clair|first=Kassia|publisher=John Murray|year=2016|isbn=9781473630819|location=London|page=94|oclc=936144129}}</ref> The color of the bridge is officially an orange ] called '']''.<ref name="orangePaint">{{cite web |url=http://goldengatebridge.org/research/factsGGBIntOrngPaint.php |title=Golden Gate Bridge: Construction Data |publisher=Golden Gate Bridge, Highway and Transportation District |access-date=August 20, 2007 |archive-date=August 22, 2011 |archive-url=https://web.archive.org/web/20110822071258/http://www.goldengatebridge.org/research/factsGGBIntOrngPaint.php |url-status=dead }}</ref><ref name=ergallr>{{cite news |url=https://news.google.com/newspapers?id=a_xVAAAAIBAJ&sjid=SuMDAAAAIBAJ&pg=5974%2C3253216 |work=Eugene Register-Guard |location=(Oregon) |agency=Associated Press |last=Price |first=Lyle W. |title=Golden Gate holds allure for painters |date=December 15, 1965 |page=4B}}</ref> The color was selected by consulting architect Irving Morrow<ref>{{cite news |last=Stamberg |first=Susan |title=The Golden Gate Bridge's Accidental Color |newspaper=NPR.org |url=https://www.npr.org/2011/04/26/135150942/the-golden-gate-bridges-accidental-color |publisher=NPR |access-date=April 27, 2011}}</ref> because it complements the natural surroundings and enhances the bridge's visibility in fog.<ref name="StClair">{{Cite book|title=The Secret Lives of Colour|last=St. Clair|first=Kassia|publisher=John Murray|year=2016|isbn=978-1-4736-3081-9|location=London|page=94|oclc=936144129}}</ref>


The bridge was originally painted with ] primer and a lead-based topcoat, which was touched up as required. In the mid-1960s, a program was started to improve corrosion protection by stripping the original paint and repainting the bridge with ] primer and ] topcoats.<ref name="goldengatebridge facts" /><ref name="orangePaint" /> Since 1990, ] topcoats have been used instead for air-quality reasons. The program was completed in 1995 and it is now maintained by 38 painters who touch up the paintwork where it becomes seriously corroded.<ref>{{cite web |year=2006 |url=http://goldengatebridge.org/research/facts.php#IronworkersPainters |title=Golden Gate Bridge: Construction Data: How Many Ironworkers and Painters Maintain the Golden Gate Bridge? |publisher=Golden Gate Bridge, Highway and Transportation District |access-date=April 13, 2006}}</ref> The bridge was originally painted with ] primer and a lead-based topcoat, which was touched up as required. In the mid-1960s, a program was started to improve corrosion protection by stripping the original paint and repainting the bridge with ] primer and ] topcoats.<ref name="goldengatebridge facts" /><ref name="orangePaint" /> Since 1990, ] topcoats have been used instead for air-quality reasons. The program was completed in 1995 and it is now maintained by 38 painters who touch up the paintwork where it becomes seriously corroded.<ref>{{cite web |year=2006 |url=http://goldengatebridge.org/research/facts.php#IronworkersPainters |title=Golden Gate Bridge: Construction Data: How Many Ironworkers and Painters Maintain the Golden Gate Bridge? |publisher=Golden Gate Bridge, Highway and Transportation District |access-date=April 13, 2006 |archive-date=August 10, 2015 |archive-url=https://web.archive.org/web/20150810050111/http://goldengatebridge.org/research/facts.php#IronworkersPainters |url-status=dead }}</ref>
The ongoing maintenance task of painting the bridge is continuous.<ref name="PaintBridgeGGBHTD">{{cite web |url= http://goldengatebridge.org/research/factsGGBIntOrngPaint.php |title= Painting the Bridge |author= Golden Gate Bridge, Highway and Transportation District |date= 2018 |work= goldengatebridge.org |access-date= November 24, 2019 |quote= The Bridge is painted continuously. Painting the Bridge is an ongoing task and a primary maintenance job. |author-link= Golden Gate Bridge, Highway and Transportation District }}</ref> The ongoing maintenance task of painting the bridge is continuous.<ref name="PaintBridgeGGBHTD">{{cite web |url= http://goldengatebridge.org/research/factsGGBIntOrngPaint.php |title= Painting the Bridge |author= Golden Gate Bridge, Highway and Transportation District |date= 2018 |work= goldengatebridge.org |access-date= November 24, 2019 |quote= The Bridge is painted continuously. Painting the Bridge is an ongoing task and a primary maintenance job. |author-link= Golden Gate Bridge, Highway and Transportation District |archive-date= August 22, 2011 |archive-url= https://web.archive.org/web/20110822071258/http://www.goldengatebridge.org/research/factsGGBIntOrngPaint.php |url-status= dead }}</ref>
{{Clear}} {{Clear}}


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==Traffic== ==Traffic==
] ]
]Most maps and signage mark the bridge as part of the ] between ] and ]. Although part of the ], the bridge is not officially part of ].<ref>{{cite web |url=http://goldengatebridge.org/tolls_traffic/ |title=Toll Rates & Traffic Operations |publisher=Golden Gate Bridge, Highway and Transportation District |access-date=December 3, 2013}}</ref> For example, under the ], Route 101 ends at "the approach to the Golden Gate Bridge" and then resumes at "a point in Marin County opposite San Francisco". The ] has jurisdiction over the segment of highway that crosses the bridge instead of the ] (Caltrans). ]Most maps and signage mark the bridge as part of the ] between ] and ]. Although part of the ], the bridge is not officially part of ].<ref>{{cite web |url=http://goldengatebridge.org/tolls_traffic/ |title=Toll Rates & Traffic Operations |publisher=Golden Gate Bridge, Highway and Transportation District |access-date=December 3, 2013 |archive-date=December 7, 2013 |archive-url=https://web.archive.org/web/20131207003017/http://goldengatebridge.org/tolls_traffic/ |url-status=dead }}</ref> For example, under the ], Route 101 ends at "the approach to the Golden Gate Bridge" and then resumes at "a point in Marin County opposite San Francisco". The Golden Gate Bridge, Highway and Transportation District has jurisdiction over the segment of highway that crosses the bridge instead of the ] (Caltrans).


The ] between the lanes ] several times daily to conform to traffic patterns. On weekday mornings, traffic flows mostly southbound into the city, so four of the six lanes run southbound. Conversely, on weekday afternoons, four lanes run northbound. During off-peak periods and weekends, traffic is split with three lanes in each direction.<ref name="lane-configuration">{{cite web |url=http://goldengatebridge.org/tolls_traffic/RoadwayConfig.php |title=Roadway Configuration / Reversible Lanes |publisher=Golden Gate Bridge, Highway and Transportation District |access-date=December 23, 2012}}</ref> The ] between the lanes ] several times daily to conform to traffic patterns. On weekday mornings, traffic flows mostly southbound into the city, so four of the six lanes run southbound. Conversely, on weekday afternoons, four lanes run northbound. During off-peak periods and weekends, traffic is split with three lanes in each direction.<ref name="lane-configuration">{{cite web |url=http://goldengatebridge.org/tolls_traffic/RoadwayConfig.php |title=Roadway Configuration / Reversible Lanes |publisher=Golden Gate Bridge, Highway and Transportation District |access-date=December 23, 2012 |archive-date=December 9, 2012 |archive-url=https://web.archive.org/web/20121209104318/http://goldengatebridge.org/tolls_traffic/RoadwayConfig.php |url-status=dead }}</ref>


From 1968 to 2015, opposing traffic was separated by small, ]; during that time, there were 16 fatalities resulting from 128 head-on collisions.<ref name="movable-barrier-project">{{cite web |url=http://goldengatebridge.org/projects/MovableMedianBarrier.php |title=Additional Information&nbsp;– Movable Median Barrier Project |publisher=Golden Gate Bridge, Highway and Transportation District |access-date=September 29, 2014 }}{{dead link|date=May 2016|bot=medic}}{{cbignore|bot=medic}}</ref> To improve safety, the ] on the Golden Gate Bridge was reduced from {{convert|50|to|45|mph|km/h|abbr=on}} on October 1, 1983.<ref name=KeyDates/> Although there had been discussion concerning the installation of a movable barrier since the 1980s, only in March 2005 did the Bridge Board of Directors commit to finding funding to complete the $2&nbsp;million study required prior to the installation of a movable median barrier.<ref name="movable-barrier-project"/> Installation of the resulting barrier was completed on January 11, 2015, following a closure of 45.5 hours to private vehicle traffic, the longest in the bridge's history. The new barrier system, including the zipper trucks, cost approximately $30.3 million to purchase and install.<ref name="movable-barrier-project"/><ref>{{cite news |last1=Asimov |first1=Nanette |title=Golden Gate Bridge work finished early as barrier is installed |url=http://www.sfgate.com/bayarea/article/Golden-Gate-Bridge-work-zips-along-as-barrier-is-6008424.php |access-date=January 11, 2015 |work=San Francisco Chronicle |publisher=Hearst Newspapers |date=January 11, 2015}}</ref> From 1968 to 2015, opposing traffic was separated by small, ]; during that time, there were 16 fatalities resulting from 128 head-on collisions.<ref name="movable-barrier-project">{{cite web |url=http://goldengatebridge.org/projects/MovableMedianBarrier.php |title=Additional Information&nbsp;– Movable Median Barrier Project |publisher=Golden Gate Bridge, Highway and Transportation District |access-date=September 29, 2014 }}{{dead link|date=May 2016|bot=medic}}{{cbignore|bot=medic}}</ref> To improve safety, the ] on the Golden Gate Bridge was reduced from {{convert|50|to|45|mph|km/h|abbr=on}} on October 1, 1983.<ref name=KeyDates/> Although there had been discussion concerning the installation of a movable barrier since the 1980s, only in March 2005 did the Bridge Board of Directors commit to finding funding to complete the $2&nbsp;million study required prior to the installation of a movable median barrier.<ref name="movable-barrier-project"/> Installation of the resulting barrier was completed on January 11, 2015, following a closure of 45.5 hours to private vehicle traffic, the longest in the bridge's history. The new barrier system, including the zipper trucks, cost approximately $30.3 million to purchase and install.<ref name="movable-barrier-project"/><ref>{{cite news |last1=Asimov |first1=Nanette |title=Golden Gate Bridge work finished early as barrier is installed |url=http://www.sfgate.com/bayarea/article/Golden-Gate-Bridge-work-zips-along-as-barrier-is-6008424.php |access-date=January 11, 2015 |work=San Francisco Chronicle |publisher=Hearst Newspapers |date=January 11, 2015}}</ref>

The bridge carries about 112,000 vehicles per day according to the Golden Gate Bridge Highway and Transportation District.<ref>{{cite web |url=https://www.goldengate.org/bridge/bridge-operations |publisher=The Golden Gate Bridge |title=Bridge Operations |work=Goldengate.org |access-date=December 29, 2019}}</ref>


===Usage and tourism=== ===Usage and tourism===
{{See also|Golden Gate National Recreation Area}}
] ]
The bridge is popular with pedestrians and bicyclists, and was built with walkways on either side of the six vehicle traffic lanes. Initially, they were separated from the traffic lanes by only a metal curb, but railings between the walkways and the traffic lanes were added in 2003, primarily as a measure to prevent bicyclists from falling into the roadway.<ref name="jumpers">{{cite web |last=Lucas |first=Scott |url=http://www.modernluxury.com/san-francisco/story/kevin-hines-still-alive |title=Kevin Hines Is Still Alive |work=Modern Luxury |date=July 18, 2013 |access-date=July 18, 2013}}</ref> The bridge was designated as part of ] in 2021.<ref>{{cite press release|title=U.S. Bicycle Route System Adds 2,903 Miles of New Routes in 5 States|url=https://www.adventurecycling.org/about-us/media/press-releases/u-s-bicycle-route-system-adds-2-903-miles-of-new-routes-in-5-states/|publisher=Adventure Cycling Association|date=August 9, 2021|access-date=August 19, 2021|archive-date=October 20, 2021|archive-url=https://web.archive.org/web/20211020010539/https://www.adventurecycling.org/about-us/media/press-releases/u-s-bicycle-route-system-adds-2-903-miles-of-new-routes-in-5-states/|url-status=dead}}</ref>
{{see also|Golden Gate National Recreation Area}}
The bridge is popular with pedestrians and bicyclists, and was built with walkways on either side of the six vehicle traffic lanes. Initially, they were separated from the traffic lanes by only a metal curb, but railings between the walkways and the traffic lanes were added in 2003, primarily as a measure to prevent bicyclists from falling into the roadway.<ref name="jumpers">{{cite web |last=Lucas |first=Scott |url=http://www.modernluxury.com/san-francisco/story/kevin-hines-still-alive |title=Kevin Hines Is Still Alive |work=Modern Luxury |date=July 18, 2013 |access-date=July 18, 2013}}</ref>

The bridge carries about 112,000 vehicles per day according to the Golden Gate Bridge Highway and Transportation District.<ref>{{cite web |url=https://www.goldengate.org/bridge/bridge-operations |publisher=The Golden Gate Bridge |title=Bridge Operations |work=Goldengate.org |access-date=December 29, 2019}}</ref>
The main walkway is on the eastern side, and is open for use by both pedestrians and bicycles in the morning to mid-afternoon during weekdays (5:00&nbsp;a.m. to 3:30&nbsp;p.m.), and to pedestrians only for the remaining daylight hours (until 6:00&nbsp;p.m., or 9:00&nbsp;p.m. during ]). The eastern walkway is reserved for pedestrians on weekends (5:00&nbsp;a.m. to 6:00&nbsp;p.m., or 9:00&nbsp;p.m. during DST), and is open exclusively to bicyclists in the evening and overnight, when it is closed to pedestrians. The western walkway is open only for bicyclists and only during the hours when they are not allowed on the eastern walkway.<ref>. Goldengatebridge.org. Retrieved June 14, 2013.</ref> The main walkway is on the eastern side, and is open for use by both pedestrians and bicycles in the morning to mid-afternoon during weekdays (5:00&nbsp;a.m. to 3:30&nbsp;p.m.), and to pedestrians only for the remaining daylight hours (until 6:00&nbsp;p.m., or 9:00&nbsp;p.m. during ]). The eastern walkway is reserved for pedestrians on weekends (5:00&nbsp;a.m. to 6:00&nbsp;p.m., or 9:00&nbsp;p.m. during DST), and is open exclusively to bicyclists in the evening and overnight, when it is closed to pedestrians. The western walkway is open only for bicyclists and only during the hours when they are not allowed on the eastern walkway.<ref> {{Webarchive|url=https://web.archive.org/web/20110826225457/http://goldengatebridge.org/bikesbridge/bikes.php |date=August 26, 2011 }}. Goldengatebridge.org. Retrieved June 14, 2013.</ref>


Bus service across the bridge is provided by two public transportation agencies: ] and ]. Muni offers Saturday and Sunday service on the Marin Headlands Express bus line, and Golden Gate Transit runs numerous bus lines throughout the week.<ref name="Muni Route 76X">{{cite web |title=Muni Route 76X Marin Headlands |url=http://www.sfmta.com/getting-around/transit/routes-stops/76x-marin-headlands |publisher=San Francisco Municipal Transportation Agency |access-date=July 2, 2014}}</ref><ref name="Golden Gate Transit bus service">{{cite web |title=Golden Gate Transit bus service |url=http://goldengatetransit.org/services/documents/Map_SF.pdf |publisher=Golden Gate Transit |access-date=August 19, 2012}}</ref> The southern end of the bridge, near the toll plaza and parking lot, is also accessible daily from 5:30&nbsp;a.m. to midnight by Muni line 28.<ref name="Muni Route 28">{{cite web |title=Muni Route 28 19th Avenue |url=http://www.sfmta.com/cms/asystem/routedesc.php?rted=28 |publisher=San Francisco Municipal Transportation Agency |access-date=August 19, 2012}}</ref> The Marin Airporter, a private company, also offers service across the bridge between Marin County and ].<ref>{{Cite web|url=https://marinairporter.com/|title=Marin Airporter, SFO Airport Transportation, Bus Service, Marin County, CA|website=Marin Airporter}}</ref> Bus service across the bridge is provided by one public transportation agency, ], which runs numerous bus lines throughout the week.<ref name="Golden Gate Transit bus service">{{cite web |title=Golden Gate Transit bus service |url=http://goldengatetransit.org/services/documents/Map_SF.pdf |archive-url=https://web.archive.org/web/20070105174149/http://goldengatetransit.org/services/documents/Map_SF.pdf |archive-date=January 5, 2007 |url-status=live |publisher=Golden Gate Transit |access-date=August 19, 2012}}</ref> The southern end of the bridge, near the toll plaza and parking lot, is also accessible daily from 5:30&nbsp;a.m. to midnight by ] line 28.<ref name="Muni Route 28">{{cite web |title=Muni Route 28 19th Avenue |url=http://www.sfmta.com/cms/asystem/routedesc.php?rted=28 |publisher=San Francisco Municipal Transportation Agency |access-date=August 19, 2012}}</ref> Muni formerly offered Saturday and Sunday service across the bridge on the Marin Headlands Express bus line, but this was indefinitely suspended due to the ].<ref name="Muni Route 76X">{{cite web |title=Muni Route 76X Marin Headlands |date=December 18, 2012 |url=http://www.sfmta.com/getting-around/transit/routes-stops/76x-marin-headlands |publisher=San Francisco Municipal Transportation Agency |access-date=April 4, 2024}}</ref><ref name="Service Update During COVID-19">{{cite web |title=Service Update During COVID-19 |date=March 16, 2020 |url=https://www.sfmta.com/blog/service-update-during-covid-19 |publisher=San Francisco Municipal Transportation Agency |access-date=April 4, 2024}}</ref> The Marin Airporter, a private company, also offers service across the bridge between Marin County and ].<ref>{{Cite web|url=https://marinairporter.com/|title=Marin Airporter, SFO Airport Transportation, Bus Service, Marin County, CA|website=Marin Airporter}}</ref>


A ] and gift shop, originally called the "Bridge Pavilion" (since renamed the “Golden Gate Bridge Welcome Center”), is located on the San Francisco side of the bridge, adjacent to the southeast parking lot. It opened in 2012, in time for the bridge's 75th anniversary celebration. A cafe, outdoor exhibits, and restroom facilities are located nearby.<ref>{{cite web |title=Site Improvements |url=http://goldengatebridge75.org/about/site-improvements.html |website=Golden Gate Bridge 75th Anniversary |publisher=Golden Gate Bridge Highway and Transportation District |access-date=January 12, 2015}}</ref> On the Marin side of the bridge, only accessible from the northbound lanes, is the H. Dana Bower Rest Area and Vista Point,<ref>{{cite web | url=http://www.dot.ca.gov/hq/maint/ra/ra99.htm | title=H. Dana Bowers Rest Area | publisher=California Department of Transportation | access-date=June 2, 2016}}</ref> named after the first landscape architect for the California Division of Highways.<ref>{{cite book | url=http://www.dot.ca.gov/hq/tsip/hseb/products/Named_Freeways_Final.pdf | title=2015 Named Freeways, Highways, Structures and Other Appurtenances in California | pages=183, 205 | publisher=California Department of Transportation | access-date=June 2, 2016}}</ref> A ] and gift shop, originally called the "Bridge Pavilion" (since renamed the "Golden Gate Bridge Welcome Center"), is located on the San Francisco side of the bridge, adjacent to the southeast parking lot. It opened in 2012, in time for the bridge's 75th-anniversary celebration. A cafe, outdoor exhibits, and restroom facilities are located nearby.<ref>{{cite web |title=Site Improvements |url=http://goldengatebridge75.org/about/site-improvements.html |website=Golden Gate Bridge 75th Anniversary |publisher=Golden Gate Bridge Highway and Transportation District |access-date=January 12, 2015}}</ref> On the Marin side of the bridge, only accessible from the northbound lanes, is the H. Dana Bower Rest Area and Vista Point,<ref>{{cite web | url=http://www.dot.ca.gov/hq/maint/ra/ra99.htm | title=H. Dana Bowers Rest Area | publisher=California Department of Transportation | access-date=June 2, 2016 | archive-date=May 29, 2016 | archive-url=https://web.archive.org/web/20160529120513/http://www.dot.ca.gov/hq/maint/ra/ra99.htm | url-status=dead }}</ref> named after the first landscape architect for the California Division of Highways.<ref>{{cite book | url=http://www.dot.ca.gov/hq/tsip/hseb/products/Named_Freeways_Final.pdf |archive-url=https://web.archive.org/web/20121012022502/http://www.dot.ca.gov/hq/tsip/hseb/products/Named_Freeways_Final.pdf |archive-date=October 12, 2012 |url-status=live | title=2015 Named Freeways, Highways, Structures and Other Appurtenances in California | pages=183, 205 | publisher=California Department of Transportation | access-date=June 2, 2016}}</ref>


Lands and waters under and around the bridge are homes to varieties of wildlife such as ]s, harbor seals, and sea lions.<ref>. Retrieved on July 30, 2017</ref><ref>The ]. 2015. . Retrieved on July 30, 2017</ref> Three species of ]s (whales) that had been absent in the area for many years have shown recent{{When|date=February 2020}} recoveries/(re)colonizations in the vicinity of the bridge; researchers studying them have encouraged stronger protections and recommended that the public watch them from the bridge or from land, or use a local ] operator.<ref>. Retrieved on July 30, 2017</ref><ref>Keener B.. 2017. . Retrieved on July 30, 2017</ref><ref>Woodrow M.. 2017. . The ]. Retrieved on July 30, 2017</ref> Lands and waters under and around the bridge are homes to varieties of wildlife such as ]s, harbor seals, and sea lions.<ref>. Retrieved on July 30, 2017</ref><ref>The ]. 2015. . Retrieved on July 30, 2017</ref> Three species of ]s (whales) that had been absent in the area for many years have shown recent{{When|date=February 2020}} recoveries/(re)colonizations in the vicinity of the bridge; researchers studying them have encouraged stronger protections and recommended that the public watch them from the bridge or from land, or use a local ] operator.<ref>. Retrieved on July 30, 2017</ref><ref>Keener B.. 2017. . Retrieved on July 30, 2017</ref><ref>Woodrow M.. 2017. . The ]. Retrieved on July 30, 2017</ref>


=== Tolls === === Tolls ===
====Current toll rates====
Tolls are only collected from southbound traffic at the toll plaza on the San Francisco side of the bridge. ] has been in effect since 2013, and drivers may either pay using the ] electronic toll collection device, using the license plate tolling program, or via a one time payment online. Effective {{Start date|2025|07|01}}, the regular toll rate for passenger cars is $9.50, with FasTrak users paying a discounted toll of $9.25. During peak traffic hours, ] vehicles carrying three or more people, or motorcycles may pay a discounted toll of $7.25 if they have FasTrak and use the designated carpool lane. Drivers must pay within 48 hours after crossing the bridge or they will be sent a toll violation invoice. The toll violation penalty is $10.25.<ref>{{cite web|title=Golden Gate Bridge|url=https://www.bayareafastrak.org/en/tolls/golden-gate-bridge.shtml|website=www.bayareafastrak.org|publisher=CalTrans|access-date=July 4, 2024}}</ref>

====Historical toll rates====
] ]
When the Golden Gate Bridge opened in 1937, the toll was 50{{spaces}}cents per car (equivalent to ${{inflation|US|0.50|1937|r=2}} in {{inflation/year|US}}), collected in each direction. In 1950 it was reduced to 40{{spaces}}cents each way (${{inflation|US|0.40|1950|r=2}} in {{inflation/year|US}}), then lowered to 25{{spaces}}cents in 1955 (${{inflation|US|0.25|1955|r=2}} in {{inflation/year|US}}). In 1968, the bridge was converted to only collect tolls from southbound traffic, with the toll amount reset back to 50{{spaces}}cents (${{inflation|US|0.50|1968|r=2}} in {{inflation/year|US}}).<ref name=TollData>{{cite web |publisher= Golden Gate Bridge, Highway and Transportation District |title=Traffic/Toll Data |url=http://goldengatebridge.org/research/GGBTraffToll.php |access-date=June 3, 2018}}</ref> When the Golden Gate Bridge opened in 1937, the toll was 50{{spaces}}cents per car (equivalent to ${{inflation|US|0.50|1937|r=2}} in {{inflation/year|US}}), collected in each direction. In 1950 it was reduced to 40{{spaces}}cents each way (${{inflation|US|0.40|1950|r=2}} in {{inflation/year|US}}), then lowered to 25{{spaces}}cents in 1955 (${{inflation|US|0.25|1955|r=2}} in {{inflation/year|US}}). In 1968, the bridge was converted to only collect tolls from southbound traffic, with the toll amount reset back to 50{{spaces}}cents (${{inflation|US|0.50|1968|r=2}} in {{inflation/year|US}}).<ref name=TollData>{{cite web |publisher= Golden Gate Bridge, Highway and Transportation District |title=Traffic/Toll Data |url=https://www.goldengate.org/bridge/history-research/statistics-data/traffic-toll-data/ |access-date=August 20, 2021}}</ref>


From May 1937 until December 1970, pedestrians were charged a toll of 10 cents for bridge access via ]s on the sidewalks.<ref>{{cite news |last1=Weise |first1=Elizabeth |title=Toll to walk Golden Gate Bridge? No way, says petition |url=https://www.usatoday.com/story/news/2014/11/17/golden-gate-bridge-pedestrian-toll-petition/19188073/ |access-date=23 March 2024 |agency=USA Today |date=November 17, 2014}}</ref><ref>{{cite news |last1=Dawid |first1=Irvin |title=Bike, Pedestrian Toll on Golden Gate Bridge Survives First Vote |url=https://www.planetizen.com/node/71854 |access-date=23 March 2024 |agency=Planetizen |date=October 26, 2014}}</ref>
The last of the construction bonds were retired in 1971, with $35&nbsp;million (equivalent to ${{inflation|US|35|1971}}M in {{inflation/year|US}}) in principal and nearly $39&nbsp;million (${{inflation|US|39|1971}}M in {{inflation/year|US}}) in interest raised entirely from bridge tolls.<ref name=KeyDates>{{cite web |publisher=Research Library |title=Key Dates |url=http://goldengatebridge.org/research/dates.php |access-date=December 11, 2007}}</ref> Tolls continued to be collected and subsequently incrementally raised; by 1991, the toll was $3.00 (equivalent to ${{inflation|US|3|1991|r=2}} in {{inflation/year|US}}).<ref name=TollData/>


The last of the construction bonds were retired in 1971, with $35&nbsp;million (equivalent to ${{inflation|US|35|1971}}M in {{inflation/year|US}}) in principal and nearly $39&nbsp;million (${{inflation|US|39|1971}}M in {{inflation/year|US}}) in interest raised entirely from bridge tolls.<ref name=KeyDates>{{cite web |publisher=Research Library |title=Key Dates |url=http://goldengatebridge.org/research/dates.php |access-date=December 11, 2007 |archive-date=February 9, 2011 |archive-url=https://web.archive.org/web/20110209095931/http://goldengatebridge.org/research/dates.php |url-status=dead }}</ref> Tolls continued to be collected and subsequently incrementally raised; in 1991, the toll was raised a dollar to $3.00 (equivalent to ${{inflation|US|3|1991|r=2}} in {{inflation/year|US}}).<ref name=TollData/><ref name=ggblue>{{cite news |url=https://www.latimes.com/archives/la-xpm-1991-05-07-mn-1348-story.html |work=Los Angeles Times |last=Elliott |first=Christopher |title=Singing those Golden Gate Blues |date=May 7, 1991 |access-date=November 4, 2021}}</ref>
The bridge began accepting tolls via the ] electronic toll collection system in 2002, with $4 tolls for FasTrak users and $5 for those paying cash (equivalent to ${{inflation|US|4|2002|r=2}} and ${{inflation|US|5|2002|r=2}} respectively in {{inflation/year|US}}).<ref name=TollData/> In November 2006, the Golden Gate Bridge, Highway and Transportation District recommended a ] program for the bridge to address its operating deficit, projected at $80&nbsp;million over five years. The District promised that the proposal, which it called a "partnership program", would not include changing the name of the bridge or placing advertising on the bridge itself. In October 2007, the Board unanimously voted to discontinue the proposal and seek additional revenue through other means, most likely a toll increase.<ref>{{cite news |work=San Francisco Chronicle |url=http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2007/10/27/BAIPT1MHO.DTL&hw=golden+gate&sn=001&sc=1000 |access-date=October 27, 2007 |title=Golden Gate Bridge directors reject sponsorship proposals |author=Curiel, Jonathan |date=October 27, 2007}}</ref><ref>{{cite web |url=http://goldengate.org/news/PartnershipProgram.php |publisher=Golden Gate Bridge, Highway and Transportation District |access-date=October 27, 2007 |title=Partnership Program Status}}</ref> The District later increased the toll amounts in 2008 to $5 for FasTrak users and $6 to those paying cash (equivalent to ${{inflation|US|5|2008|r=2}} and ${{inflation|US|6|2008|r=2}} respectively in {{inflation/year|US}}).<ref name=TollData/>


The bridge began accepting tolls via the FasTrak electronic toll collection system in 2002, with $4 tolls for FasTrak users and $5 for those paying cash (equivalent to ${{inflation|US|4|2002|r=2}} and ${{inflation|US|5|2002|r=2}} respectively in {{inflation/year|US}}).<ref name=TollData/> In November 2006, the Golden Gate Bridge, Highway and Transportation District recommended a ] program for the bridge to address its operating deficit, projected at $80&nbsp;million over five years. The District promised that the proposal, which it called a "partnership program", would not include changing the name of the bridge or placing advertising on the bridge itself. In October 2007, the Board unanimously voted to discontinue the proposal and seek additional revenue through other means, most likely a toll increase.<ref>{{cite news |work=San Francisco Chronicle |url=http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2007/10/27/BAIPT1MHO.DTL&hw=golden+gate&sn=001&sc=1000 |access-date=October 27, 2007 |title=Golden Gate Bridge directors reject sponsorship proposals |author=Curiel, Jonathan |date=October 27, 2007}}</ref><ref>{{cite web |url=http://goldengate.org/news/PartnershipProgram.php |publisher=Golden Gate Bridge, Highway and Transportation District |access-date=October 27, 2007 |title=Partnership Program Status}}</ref> The District later increased the toll amounts in 2008 to $5 for FasTrak users and $6 to those paying cash (equivalent to ${{inflation|US|5|2008|r=2}} and ${{inflation|US|6|2008|r=2}} respectively in {{inflation/year|US}}).<ref name=TollData/>
In an effort to save $19.2&nbsp;million over the following 10 years, the Golden Gate District voted in January 2011 to eliminate all toll takers by 2012 and use only ].<ref>{{cite news |url=http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2011/01/28/MN4M1HFS7J.DTL |title=Golden Gate Bridge to eliminate toll takers |first=Michael |last=Cabanatuan |work=San Francisco Chronicle |date=January 29, 2011 |access-date=January 30, 2011}}</ref> Subsequently, this was delayed and toll taker elimination occurred in March 2013. The cost savings have been revised to $19 million over an eight-year period. In addition to FasTrak, the Golden Gate District implemented the use of ] (branded as "Pay-by-Plate"), and also a one time payment system for drivers to pay before or after their trip on the bridge. Twenty-eight positions were eliminated as part of this plan.<ref name = "tolls">{{cite web |url=http://goldengate.org/toll/index.php |title=Toll 2014 |publisher=Goldengate.org |date=April 7, 2014 |access-date=April 26, 2014}}</ref>


In an effort to save $19.2&nbsp;million over the following 10 years, the Golden Gate District voted in January 2011 to eliminate all toll takers by 2012 and use only ].<ref>{{cite news |url=http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2011/01/28/MN4M1HFS7J.DTL |title=Golden Gate Bridge to eliminate toll takers |first=Michael |last=Cabanatuan |work=San Francisco Chronicle |date=January 29, 2011 |access-date=January 30, 2011}}</ref> Subsequently, this was delayed and toll taker elimination occurred in March 2013. The cost savings have been revised to $19 million over an eight-year period. In addition to FasTrak, the Golden Gate Transportation District implemented the use of ] (branded as "Pay-by-Plate"), and also a one-time payment system for drivers to pay before or after their trip on the bridge. Twenty-eight positions were eliminated as part of this plan.<ref name = "tolls">{{cite web |url=https://www.kqed.org/news/92514/golden-gate-bridge-toll-takers-reach-end-of-the-line-as-new-payment-system-begins |title=Golden Gate Bridge Toll-takers Reach End of the Line as New Payment System Begins |publisher=KQED |date=March 27, 2013 |access-date=August 20, 2021}}</ref>
On April 7, 2014, the toll for users of FasTrak was increased from $5 to $6 (equivalent to ${{inflation|US|6|2014|r=2}} in {{inflation/year|US}}), while the toll for drivers using either the license plate tolling or the one time payment system was raised from $6 to $7 (equivalent to ${{inflation|US|7|2014|r=2}} in {{inflation/year|US}}). Bicycle, pedestrian, and northbound motor vehicle traffic remain toll free. For vehicles with more than two axles, the toll rate was $7 per axle for those using license plate tolling or the one time payment system, and $6 per axle for FasTrak users. During peak traffic hours, carpool vehicles carrying two or more people and motorcycles paid a discounted toll of $4 (equivalent to ${{inflation|US|4|2014|r=2}} in {{inflation/year|US}}); drivers must have had Fastrak to take advantage of this carpool rate.<ref name="tolls"/> The Golden Gate Transportation District then planned to increase the tolls by 25{{spaces}}cents in July 2015, and then by another 25{{spaces}}cents each of the next three years.<ref name="SFCron_20140407">{{cite news |url=http://www.sfgate.com/bayarea/article/Tolls-for-crossing-Golden-Gate-Bridge-rise-1-5381206.php |title=Tolls for crossing Golden Gate Bridge rise $1 |first=Michael |last=Cabanatuan |work=San Francisco Chronicle |date=April 7, 2014 |access-date=April 26, 2014}}</ref>

On April 7, 2014, the toll for users of FasTrak was increased from $5 to $6 (equivalent to ${{inflation|US|6|2014|r=2}} in {{inflation/year|US}}), while the toll for drivers using either the license plate tolling or the one time payment system was raised from $6 to $7 (equivalent to ${{inflation|US|7|2014|r=2}} in {{inflation/year|US}}). Bicycle, pedestrian, and northbound motor vehicle traffic remain toll free. For vehicles with more than two axles, the toll rate was $7 per axle for those using license plate tolling or the one time payment system, and $6 per axle for FasTrak users. During peak traffic hours, carpool vehicles carrying two or more people and motorcycles paid a discounted toll of $4 (equivalent to ${{inflation|US|4|2014|r=2}} in {{inflation/year|US}}); drivers must have had Fastrak to take advantage of this carpool rate.<ref name="tolls"/> The Golden Gate Transportation District then increased the tolls by 25{{spaces}}cents in July 2015, and then by another 25{{spaces}}cents each of the next three years.<ref name="SFCron_20140407">{{cite news |url=http://www.sfgate.com/bayarea/article/Tolls-for-crossing-Golden-Gate-Bridge-rise-1-5381206.php |title=Tolls for crossing Golden Gate Bridge rise $1 |first=Michael |last=Cabanatuan |work=San Francisco Chronicle |date=April 7, 2014 |access-date=April 26, 2014}}</ref>

In March 2019, the Golden Gate Transportation District approved a plan to implement 35-cent annual toll increases through 2023, except for the toll-by-plate program which will increase by 20{{spaces}}cents per year.<ref name="KRON_20190701">{{cite news |url=https://www.kron4.com/news/bay-area/golden-gate-bridge-toll-increase-takes-effect-july-1/ |title=Golden Gate Bridge toll increase takes effect July 1 |first=Kayla |last=Galloway |work=KRON-TV |date=July 1, 2019 |access-date=August 20, 2021 |archive-date=August 20, 2021 |archive-url=https://web.archive.org/web/20210820011006/https://www.kron4.com/news/bay-area/golden-gate-bridge-toll-increase-takes-effect-july-1/ |url-status=dead }}</ref> The district then approved another plan in March 2024 to implement 50-cent annual toll increases through 2028.<ref name="KRON_202303">{{cite news |url=https://www.kron4.com/news/bay-area/golden-gate-bridge-toll-increase-approved-goes-into-effect-this-summer/ |title=Golden Gate Bridge toll increase approved, goes into effect this summer |first=Aaron |last=Tolentino Galloway |work=KRON-TV |date=March 23, 2024 |access-date=March 27, 2024 |archive-date=March 26, 2024 |archive-url=https://web.archive.org/web/20240326213122/https://www.kron4.com/news/bay-area/golden-gate-bridge-toll-increase-approved-goes-into-effect-this-summer/ |url-status=dead }}</ref>


{|class="wikitable" align="center" {|class="wikitable" align="center"
|+ Golden Gate Bridge toll increases (2014–19)<ref name="SFCron_20140407"/><ref>{{cite web |url=http://goldengate.org/board/2014/agendas/documents/Bd02.28.14s8bFASumRec.pdf |title=Summary of Recommendations, February 27, 2014 |publisher=Golden Gate Bridge, Highway and Transportation District |work=Board of Directors |pages=5–6 |access-date=May 24, 2015}}</ref> |+ Golden Gate Bridge toll increases (2014–28)<ref name=TollData/><ref name="SFCron_20140407"/><ref name="KRON_20190701"/><ref>{{cite web |url=https://www.goldengate.org/assets/1/6/bd02.28.14s8bfasumrec.pdf |archive-url=https://web.archive.org/web/20210820011005/https://www.goldengate.org/assets/1/6/bd02.28.14s8bfasumrec.pdf |archive-date=August 20, 2021 |url-status=live |title=Summary of Recommendations, February 27, 2014 |publisher=Golden Gate Bridge, Highway and Transportation District |work=Board of Directors |pages=5–6 |access-date=August 20, 2021}}</ref><ref>{{cite web |url=https://www.goldengate.org/district/news-media/news-archives/golden-gate-bridge-5-year-toll-increase-approved/ |title=Golden Gate Bridge 5-Year Toll Increase Approved |publisher=Golden Gate Bridge, Highway and Transportation District |work=Board of Directors |pages=5–6 |access-date=August 20, 2021}}</ref><ref>{{cite web |url=https://www.goldengate.org/golden-gate-bridge-district-approves-new-five-year-toll-program/ |title=Golden Gate Bridge District Approves New Five-Year Toll Program |publisher=Golden Gate Bridge, Highway and Transportation District |date=March 22, 2024|access-date=March 27, 2024}}</ref>
|- |-
! Effective date ! Effective date
! ] ! ]
! Toll-by-plate ! Toll-by-plate
! Toll invoice
! Carpool ! Carpool
! Multi-axle vehicle ! Multi-axle vehicle
Line 195: Line 268:
| April 7, 2014 | April 7, 2014
| $6.00 | $6.00
| colspan="2" align="center" | $7.00
| $7.00
| $4.00 | $4.00
| $7.00 per axle | $7.00 per axle
Line 201: Line 274:
| July 1, 2015 | July 1, 2015
| $6.25 | $6.25
| colspan="2" align="center" | $7.25
| $7.25
| $4.25 | $4.25
| $7.25 per axle | $7.25 per axle
Line 207: Line 280:
| July 1, 2016 | July 1, 2016
| $6.50 | $6.50
| colspan="2" align="center" | $7.50
| $7.50
| $4.50 | $4.50
| $7.50 per axle | $7.50 per axle
Line 213: Line 286:
| July 1, 2017 | July 1, 2017
| $6.75 | $6.75
| colspan="2" align="center" | $7.75
| $7.75
| $4.75 | $4.75
| $7.75 per axle | $7.75 per axle
Line 219: Line 292:
| July 1, 2018 | July 1, 2018
| $7.00 | $7.00
| colspan="2" align="center" | $8.00
| $8.00
| $5.00 | $5.00
| $8.00 per axle | $8.00 per axle
Line 225: Line 298:
| July 1, 2019 | July 1, 2019
| $7.35 | $7.35
| $8.20
| $8.35 | $8.35
| $5.35 | $5.35
| $8.35 per axle | $8.35 per axle
|-
| July 1, 2020
| $7.70
| $8.40
| $8.70
| $5.70
| $8.70 per axle
|-
| July 1, 2021
| $8.05
| $8.60
| $9.05
| $6.05
| $9.05 per axle
|-
| July 1, 2022
| $8.40
| $8.80
| $9.40
| $6.40
| $9.40 per axle
|-
| July 1, 2023
| $8.75
| $9.00
| $9.75
| $6.75
| $9.75 per axle
|-
| July 1, 2024
| $9.25
| $9.50
| $10.25
| $7.25
| $10.25 per axle
|-
| July 1, 2025
| $9.75
| $10.00
| $10.75
| $7.75
| $10.75 per axle
|-
| July 1, 2026
| $10.25
| $10.50
| $11.25
| $8.25
| $11.25 per axle
|-
| July 1, 2027
| $10.75
| $11.00
| $11.75
| $8.75
| $11.75 per axle
|-
| July 1, 2028
| $11.25
| $11.50
| $12.25
| $9.25
| $12.25 per axle
|} |}


Line 234: Line 371:
] ]


In March 2008, the Golden Gate Bridge District board approved a resolution to start ] at the Golden Gate Bridge, charging higher tolls during the peak hours, but rising and falling depending on traffic levels. This decision allowed the ] to meet the federal requirement to receive $158&nbsp;million in federal transportation funds from ] Urban Partnership grant.<ref>{{cite web|url=http://www.sonomanews.com/articles/2008/05/30/news/doc482cdfd074f2a552247919.txt |title=GG Bridge tolls could top $7, June 11 meeting will set new rates |work=Sonoma Index-Tribune |author=Bolling, David |date=May 29, 2008 }}{{dead link|date=May 2016|bot=medic}}{{cbignore|bot=medic}}</ref> As a condition of the grant, the congestion toll was to be in place by September 2009.<ref>{{cite web |author=The San Francisco Chronicle |url=http://www.planetizen.com/node/30156 |title=Congestion Pricing Approved for Golden Gate Bridge |publisher=planetizen.com |date=March 19, 2008 |access-date=April 3, 2008}}</ref><ref>{{cite web |author=Cabanatuan, Michael |url=http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2008/03/15/MNT9VK8H3.DTL&hw=Bridge+raises+tolls&sn=002&sc=825 |title=Bridge raises tolls, denies Doyle Dr. funds |work=The San Francisco Chronicle |date=March 15, 2008 |access-date=April 3, 2008}}</ref> In March 2008, the Golden Gate Bridge District board approved a resolution to start ] at the Golden Gate Bridge, charging higher tolls during the peak hours, but rising and falling depending on traffic levels. This decision allowed the ] to meet the federal requirement to receive $158&nbsp;million in federal transportation funds from ] ] grant.<ref>{{cite web|url=http://www.sonomanews.com/articles/2008/05/30/news/doc482cdfd074f2a552247919.txt |title=GG Bridge tolls could top $7, June 11 meeting will set new rates |work=Sonoma Index-Tribune |author=Bolling, David |date=May 29, 2008 }}{{dead link|date=May 2016|bot=medic}}{{cbignore|bot=medic}}</ref> As a condition of the grant, the congestion toll was to be in place by September 2009.<ref>{{cite web |author=The San Francisco Chronicle |url=http://www.planetizen.com/node/30156 |title=Congestion Pricing Approved for Golden Gate Bridge |publisher=planetizen.com |date=March 19, 2008 |access-date=April 3, 2008}}</ref><ref>{{cite web |author=Cabanatuan, Michael |url=http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2008/03/15/MNT9VK8H3.DTL&hw=Bridge+raises+tolls&sn=002&sc=825 |title=Bridge raises tolls, denies Doyle Dr. funds |work=The San Francisco Chronicle |date=March 15, 2008 |access-date=April 3, 2008}}</ref>


In August 2008, transportation officials ended the congestion pricing program in favor of varying rates for metered parking along the route to the bridge including on Lombard Street and ].<ref>{{cite web |url=http://articles.sfgate.com/2008-08-12/news/17120897_1_congestion-pricing-experiment-congestion-toll-golden-gate-bridge-district |title=Golden Gate Bridge congestion toll plan dies |work=San Francisco Chronicle |author=Cabanatuan, Michael |date=August 12, 2008}}</ref> In August 2008, transportation officials ended the congestion pricing program in favor of varying rates for metered parking along the route to the bridge including on Lombard Street and ].<ref>{{cite web |url=https://www.sfgate.com/news/article/Golden-Gate-Bridge-congestion-toll-plan-dies-3200911.php |title=Golden Gate Bridge congestion toll plan dies |work=San Francisco Chronicle |author=Cabanatuan, Michael |date=August 12, 2008}}</ref>


== Issues == == Issues ==
=== Protests and stunts ===
{{overly detailed|section|date=May 2024}}

In August 1977, three ] students climbed the cables of the Golden Gate Bridge.<ref>{{cite news |archive-url=https://web.archive.org/web/20170324154729/http://www.sfchronicle.com/thetake/article/Golden-Gate-Bridge-stunts-that-have-shocked-the-11015413.php |archive-date=March 24, 2017 |url=http://www.sfchronicle.com/thetake/article/Golden-Gate-Bridge-stunts-that-have-shocked-the-11015413.php |newspaper=San Francisco Chronicle |title=Golden Gate Bridge stunts that have shocked the city over the years |first=Bill |last=Van Niekerken |date=March 20, 2017}}</ref>

In May 1981, Dave Aguilar climbed the South Tower of the Golden Gate Bridge to protest offshore oil drilling.<ref name="sfchronicle.com">{{cite web | url=http://www.sfchronicle.com/thetake/article/Golden-Gate-Bridge-stunts-that-have-shocked-the-11015413.php | archive-url=https://web.archive.org/web/20170324154729/http://www.sfchronicle.com/thetake/article/Golden-Gate-Bridge-stunts-that-have-shocked-the-11015413.php | archive-date=March 24, 2017 | title=Golden Gate Bridge stunts that have shocked the city over the years | date=March 20, 2017 }}</ref>

On November 24, 1996, environmentalists, including ], were arrested after scaling the Golden Gate Bridge.<ref>{{cite web | url=https://www.latimes.com/archives/la-xpm-1996-11-24-mn-2645-story.html | title=Protesters Arrested at Golden Gate Bridge | website=] | date=November 24, 1996 }}</ref>

In 1997, ] authored a bill, that was signed into law by ] that increased the maximum fine for trespassing on the bridge from $1,000 to $10,000 and doubled maximum jail time from six months to a year.<ref name="sfchronicle.com"/>

In July 2001, approximately 100 protesters gathered to demand an end to the ] on the Puerto Rican island of Vieques.<ref>{{Cite web |last=PEARSON |first=JENNIFER PELTZ AND JAKE |date=2018-07-05 |title=Protester's climb shuts down Statue of Liberty on July 4 |url=https://www.pressdemocrat.com/article/news/protesters-climb-shuts-down-statue-of-liberty-on-july-4/ |access-date=2024-04-18 |website=Santa Rosa Press Democrat |language=en-US}}</ref><ref>{{Cite web |title=The Militant - July 23, 2001 &ndash; San Francisco protesters demand, 'U.S. Navy Out of Vieques Now!' |url=https://www.themilitant.com/2001/6528/652862.html |access-date=2024-04-18 |website=www.themilitant.com}}</ref>

During the ], three pro-Tibet activists scaled the bridge's vertical cables in April 2008 to protest the arrival of the Olympic torch in the city. The activists hung banners to denounce ].<ref>{{Cite web |last=ABC7 |title=Olympic torch protesters scale Golden Gate Bridge {{!}} ABC7 San Francisco {{!}} abc7news.com |url=https://abc7news.com/archive/6066082/ |access-date=2024-04-18 |website=ABC7 San Francisco |language=en}}</ref> The incident resulted in the closure of a northbound lane of the bridge and was part of a wave of protests across multiple cities against China's policies in Tibet.<ref>{{Cite web |title=Tibet protesters scale Golden Gate bridge - CNN.com |url=https://www.cnn.com/2008/US/04/07/bridge.protest/index.html |access-date=2024-04-18 |website=www.cnn.com}}</ref>

On January 20, 2017, thousands of people held hands as a human chain on the sidewalk across the Golden Gate Bridge as ].<ref>{{cite web | url=https://abc7news.com/golden-gate-bridge-human-chain-holding-hands-across-protest/1713263/ | archive-url=https://web.archive.org/web/20230525040556/https://abc7news.com/golden-gate-bridge-human-chain-holding-hands-across-protest/1713263/ | archive-date=May 25, 2023 | title=PHOTOS: Thousands gather to hold hands across Golden Gate Bridge }}</ref>

On June 6, 2020, protesters shut down traffic on the Golden Gate Bridge in a demonstration against ] following the ]. The protest, originally confined to the pedestrian path, spilled into traffic lanes as activists knelt for ], symbolizing the time a police officer knelt on Floyd's neck.<ref>{{cite news |title='Lead with Love': Meet the 2 Bay Area teens who organized, led massive Black Lives Matter rally on Golden Gate Bridge |url=https://abc7news.com/black-lives-matter-george-floyd-peaceful-protest-sf-police/6238147/ |access-date=2 April 2024 |agency=KABC-TV}}</ref> Law enforcement was unable to redirect protesters, causing a complete closure of the bridge to traffic during the demonstration. This event was part of ], with San Francisco lifting its ] to allow continued gatherings in support of the movement.<ref>{{cite news |last1=Bellow |first1=Noelle |title=Golden Gate Bridge protest was organized by teens seeking change |url=https://www.kron4.com/news/bay-area/golden-gate-bridge-protest-was-organized-by-teens-seeking-change/ |access-date=2 April 2024 |agency=KRON-TV |date=2020 |archive-date=March 22, 2024 |archive-url=https://web.archive.org/web/20240322000325/https://www.kron4.com/news/bay-area/golden-gate-bridge-protest-was-organized-by-teens-seeking-change/ |url-status=dead }}</ref><ref>{{Cite web |last=Grindell |first=Samantha |title=Thousands of protesters marched across San Francisco's Golden Gate Bridge, temporarily shutting it down to traffic |url=https://www.businessinsider.com/san-francisco-golden-gate-bridge-george-floyd-protest-2020-6 |access-date=2024-04-18 |website=Business Insider |language=en-US}}</ref>

Approximately 5,000 ] marched across the Golden Gate Bridge in October 2020 to raise awareness about an ] during the ] and to urge the US government to halt arms shipments to Turkey and Azerbaijan.<ref>{{Cite web |last=Contributor |first=Guest |date=2020-10-14 |title=Thousands March Across Golden Gate Bridge in Support of Artsakh |url=https://armenianweekly.com/2020/10/14/thousands-march-across-golden-gate-bridge-in-support-of-artsakh/ |access-date=2024-04-18 |website=The Armenian Weekly |language=en-US}}</ref> Organized by the ] San Francisco “Rosdom” Chapter, the demonstration aimed at informing Bay Area citizens about the violence against Armenians.<ref>{{Cite web |last=staff • • |first=NBC Bay Area |date=2023-09-11 |title=Bay Area's Armenian community rally in San Francisco |url=https://www.nbcbayarea.com/news/local/armenian-community-rally-san-francisco/3314542/ |access-date=2024-04-18 |website=NBC Bay Area |language=en-US}}</ref>

In June 2021, activists from the ] marched over 250 miles to advocate for climate action, culminating in a demonstration on the Golden Gate Bridge.<ref>{{Cite web |date=2021-06-15 |title=Young climate activists marched 266 miles from Paradise to SF demanding change |url=https://abc7news.com/civilian-climate-corps-act-activists-golden-gate-bridge-march/10790176/ |access-date=2024-04-18 |website=ABC7 San Francisco |language=en}}</ref> Activists called for urgent measures to combat climate change, including the passage of President Joe Biden's ], which includes funding for green energy jobs.<ref>{{Cite news |last=Morris |first=By J.D. |title=Young climate activists head to the Golden Gate Bridge on 266-mile march from Paradise |url=https://www.sfchronicle.com/local/article/Youth-climate-activists-head-to-the-Golden-Gate-16245244.php |access-date=2024-04-18 |work=San Francisco Chronicle |language=en}}</ref>

On September 30, 2021, protesters blocked traffic, urging Senate Democrats to address immigration reform and advocate for citizenship for undocumented immigrants and ].<ref>{{Cite web |last=Fernando |first=Christine |title='This injustice must stop': Protesters block Golden Gate Bridge, demand immigration reform |url=https://www.usatoday.com/story/news/nation/2021/09/30/golden-gate-bridge-blocked-protest-immigration-reform/5930606001/ |access-date=2024-04-18 |website=USA TODAY |language=en-US}}</ref> Five organizers, including an undocumented individual, were arrested during the demonstration.<ref>{{Cite news |last=Kopan |first=Deepa Fernandes and Tal |title=Golden Gate Bridge shutdown could signal the start of more direct activism on immigration reform |url=https://www.sfchronicle.com/sf/article/Protesters-shut-down-Golden-Gate-Bridge-calling-16499023.php |access-date=2024-04-18 |work=San Francisco Chronicle |language=en}}</ref>

In November 2021, a protest against ] led to a chain-reaction crash at the bridge.<ref>{{Cite web |date=2021-11-12 |title=5 hurt, including 2 officers, after crash at anti-vaccine protest in San Francisco |url=https://www.nbcnews.com/news/us-news/5-hurt-2-officers-crash-anti-vaccine-protest-san-francisco-rcna5382 |access-date=2024-04-18 |website=NBC News |language=en}}</ref> During the demonstration, a vehicle collision occurred involving two California Highway Patrol officers and three Golden Gate Bridge employees. The individuals were hospitalized with not life-threatening injuries.<ref>{{Cite web |date=2021-11-11 |title=5 People Hit, CHP Officer Hospitalized in Crash on Golden Gate Bridge During Anti-Vax Protest - CBS San Francisco |url=https://www.cbsnews.com/sanfrancisco/news/anti-vax-vaccine-mandate-golden-gate-bridge-san-francisco/ |access-date=2024-04-18 |website=www.cbsnews.com |language=en-US}}</ref>

Protests over the ] occurred on September 26, 2022. Over 1,000 protesters gathered at the Golden Gate Bridge Welcome Center to demonstrate against the Islamic Republic of Iran and its ] following the death of Amini, who had been detained after an encounter with Tehran police, leading to her subsequent coma and death.<ref>{{Cite web |last=Elassar |first=Alaa |date=2022-09-24 |title=Iranian Americans are demonstrating across the US in support of protesters in Iran |url=https://www.cnn.com/2022/09/24/us/iranian-american-protest-us-mahsa-amini/index.html |access-date=2024-04-18 |website=CNN |language=en}}</ref> The protest attendees voiced demands for women's rights and freedom, displayed signs and carrying former imperial state Iranian flags. The event drew attention globally, sparking solidarity protests in Iran, Greece, England, and France.<ref>{{Cite web |date=2022-09-26 |title=Demonstrators form human chain on Golden Gate Bridge, demand justice for death of Mahsa Amini |url=https://abc7news.com/mahsa-amini-san-francisco-bay-area-protest-iranian-woman-death/12266262/ |access-date=2024-04-18 |website=ABC7 San Francisco |language=en}}</ref>

On February 14, 2024, a pro-Palestinian protest temporarily halted traffic on the Golden Gate Bridge. Around 20 protesters gathered on the bridge, displaying banners condemning the ], and calling for an end to ].<ref>{{cite web |date=February 14, 2024 |title=Pro-Palestinian protesters block traffic on Golden Gate Bridge in San Francisco - CBS San Francisco |url=https://www.cbsnews.com/sanfrancisco/news/golden-gate-bridge-protest-traffic-san-francisco/ |website=]}}</ref> The demonstration caused a standstill in both northbound and southbound traffic.<ref>{{Cite news |last=Flores |first=Dominic Fracassa, David Hernandez, Jessica |title=Golden Gate Bridge briefly blocked by pro-Palestinian protesters |url=https://www.sfchronicle.com/sf/article/golden-gate-bridge-gaza-protest-18667219.php |access-date=2024-04-18 |work=San Francisco Chronicle |language=en}}</ref>

Pro-Palestinian protesters staged demonstrations across the bridge in April 2024 in response to the ongoing ].<ref>{{cite web | url=https://www.cbsnews.com/sanfrancisco/news/second-protest-blocks-all-lanes-of-golden-gate-bridge-san-francisco/ | title=Gaza protest shuts down Golden Gate Bridge, causing gridlock on both sides of span - CBS San Francisco | website=] | date=April 15, 2024 }}</ref> The protests aimed to raise awareness and show solidarity with Gaza during a period of conflict, with some protestors chaining themselves to vehicles to impede traffic flow.<ref>{{Cite web |date=2024-04-15 |title=38 Pro-Palestinian protesters arrested after shutdown of Golden Gate Bridge, I-880 in Oakland: CHP |url=https://abc7news.com/pro-palestinian-protesters-shut-down-golden-gate-bridge-and-i-880-in-oakland/14668534/ |access-date=2024-04-17 |website=ABC7 San Francisco |language=en}}</ref> Major highways and bridges were temporarily blocked, resulting in arrests by law enforcement.<ref>{{Cite web |date=2024-04-16 |title=Gaza war protesters shut down Golden Gate Bridge, block traffic in other cities |url=https://www.nbcnews.com/news/us-news/gaza-war-protesters-shut-golden-gate-bridge-block-traffic-rcna147945 |access-date=2024-04-17 |website=NBC News |language=en}}</ref>


===Suicides=== ===Suicides===
Line 260: Line 429:
}} }}


The Golden Gate Bridge is the most used ] in the world.<ref>{{cite news |first=James |last=Bone |title=Golden Gate bridge in San {{sic|Fransico |nolink=y}} gets safety net to deter suicides|newspaper=The Times |url=http://journalisted.com/article/jdey |via=Journalisted |archive-url=https://web.archive.org/web/20170525091537/http://journalisted.com/article/jdey |archive-date=May 25, 2017 |date=October 13, 2008}}</ref> The deck is about {{convert|245|ft|m}} above the water.<!-- Distance from water to bottom of bridge is 220 ft. Distance from bottom of bridge to deck is about 25 ft per ref. --><ref>{{cite web |url=http://keerc.snu.ac.kr/bridge/lecture/bridge/Bridge%20Design-3.pdf |title=Suspension Bridges |website=snu.ac.kr |page=5 |url-status=dead |archive-url=https://web.archive.org/web/20030712142048/http://keerc.snu.ac.kr/bridge/lecture/bridge/Bridge%20Design-3.pdf |archive-date=July 12, 2003}}</ref> After a fall of four seconds, ] hit the water at around {{cvt|75|mph|km/h m/s|-1||}}. Most die from impact ]. About 5% survive the initial impact but generally ] or die of ] in the cold water.<ref name="lethal4">{{cite news |title=Lethal Beauty. No easy death: Suicide by bridge is gruesome, and death is almost certain. The fourth in a seven-part series on the Golden Gate Bridge barrier debate. |first1=John |last1=Koopman |date=November 2, 2005 |url=http://www.sfgate.com/news/article/LETHAL-BEAUTY-No-easy-death-Suicide-by-bridge-2562269.php#page-1 |newspaper=] |access-date=June 3, 2014}}</ref><ref name="LAtimess">{{cite web |last=Bateson |first=John |url=http://articles.latimes.com/2013/sep/29/opinion/la-oe-bateson-golden-gate-bridge-suicides-20130929 |title=The suicide magnet that is the Golden Gate Bridge |newspaper=Los Angeles Times |date=September 29, 2013 |access-date=October 14, 2013 |type=opinion}}</ref> The Golden Gate Bridge is the most used ] in the world.<ref>{{cite news |first=James |last=Bone |title=Golden Gate bridge in San {{sic|Fransico |nolink=y}} gets safety net to deter suicides|newspaper=The Times |url=http://journalisted.com/article/jdey |via=Journalisted |archive-url=https://web.archive.org/web/20170525091537/http://journalisted.com/article/jdey |archive-date=May 25, 2017 |date=October 13, 2008}}</ref> The deck is about {{convert|245|ft|m}} above the water.<!-- Distance from water to bottom of bridge is 220 ft. Distance from bottom of bridge to deck is about 25 ft per ref. --><ref>{{cite web |url=http://keerc.snu.ac.kr/bridge/lecture/bridge/Bridge%20Design-3.pdf |title=Suspension Bridges |website=snu.ac.kr |page=5 |archive-url=https://web.archive.org/web/20030712142048/http://keerc.snu.ac.kr/bridge/lecture/bridge/Bridge%20Design-3.pdf |archive-date=July 12, 2003}}</ref> After a fall of four seconds,<ref name=":1">{{cite news |last=Branch |first=John |date=November 5, 2023 |title=What the Golden Gate Is (Finally) Doing About Suicides |work=] |url=https://www.nytimes.com/2023/11/05/us/golden-gate-bridge-suicide-nets.html}}</ref> ] hit the water at around {{cvt|75|mph|km/h m/s|-1||}}. Most die from impact ].<ref name=":1" /> About 5% survive the initial impact but generally ] or die of ] in the cold water.<ref name="lethal4">{{cite news |title=Lethal Beauty. No easy death: Suicide by bridge is gruesome, and death is almost certain. The fourth in a seven-part series on the Golden Gate Bridge barrier debate. |first1=John |last1=Koopman |date=November 2, 2005 |url=http://www.sfgate.com/news/article/LETHAL-BEAUTY-No-easy-death-Suicide-by-bridge-2562269.php#page-1 |newspaper=] |access-date=June 3, 2014}}</ref><ref name="LAtimess">{{cite web |last=Bateson |first=John |url=https://www.latimes.com/archives/la-xpm-2013-sep-29-la-oe-bateson-golden-gate-bridge-suicides-20130929-story.html |archive-url=https://web.archive.org/web/20131009064346/http://articles.latimes.com/2013/sep/29/opinion/la-oe-bateson-golden-gate-bridge-suicides-20130929 |url-status=live |archive-date=October 9, 2013 |title=The suicide magnet that is the Golden Gate Bridge |newspaper=Los Angeles Times |date=September 29, 2013 |access-date=October 14, 2013 |type=opinion}}</ref>


]
After years of debate and an estimated more than 1,500 deaths, suicide barriers, consisting of a stainless steel net extending 20 feet from the bridge and supported by structural steel 20 feet under the walkway, began to be installed in April 2017.<ref>{{cite news |first=Will |last=Houston |url=https://www.ukiahdailyjournal.com/2019/02/18/golden-gate-bridge-suicide-barrier-starting-to-take-shape/ |title=Golden Gate Bridge suicide barrier starting to take shape |newspaper=Ukiah Daily Journal |date=February 18, 2019 }}</ref> Construction was first estimated to take approximately four years at a cost of over $200 million.<ref>{{cite web|title=Suicide Barriers Going Up At Golden Gate Bridge After Over 1.5K Deaths|url=http://sanfrancisco.cbslocal.com/2017/04/13/suicide-barriers-to-go-up-at-golden-gate-bridge-after-1-5k-deaths/|website=CBS San Francisco|publisher=CBS Broadcasting Inc.|access-date=November 27, 2017|language=en|date=April 13, 2017}}</ref> In December 2019, it was reported that construction of the suicide prevention net had fallen two years behind schedule because the lead contractor, Shimmick Construction Co., had been sold in 2017, leading to the slowdown of several existing projects. As of December 2019, the completion date for the Golden Gate Bridge net was set for 2023.<ref>{{Cite web|url=https://ktla.com/2019/12/13/construction-of-suicide-net-at-golden-gate-bridge-is-2-years-behind-schedule/|title=Construction of Suicide Net at Golden Gate Bridge Is 2 Years Behind Schedule |date=December 13, 2019 |publisher=KTLA|access-date=December 14, 2019}}</ref><ref>{{cite web |type=press release |url=http://www.ggbsuicidebarrier.org/documents/press-release-suicide-deterrent-december-12-2019.pdf |title=Golden Gate Bridge Suicide Deterrent Net Project Update |publisher=Golden Gate Bridge Highway & Transportation District |date=December 12, 2019 }}</ref>

After years of debate and an estimated more than 1,500 deaths, suicide barriers, consisting of a stainless steel net extending {{convert|20|ft}} from the bridge and supported by structural steel 20 feet under the walkway, began to be installed in April 2017.<ref>{{cite news |first=Will |last=Houston |url=https://www.ukiahdailyjournal.com/2019/02/18/golden-gate-bridge-suicide-barrier-starting-to-take-shape/ |title=Golden Gate Bridge suicide barrier starting to take shape |newspaper=] |date=February 18, 2019}}</ref> Construction was first estimated to take approximately four years at a cost of over $200 million.<ref>{{cite web |title=Suicide Barriers Going Up At Golden Gate Bridge After Over 1.5K Deaths |url=http://sanfrancisco.cbslocal.com/2017/04/13/suicide-barriers-to-go-up-at-golden-gate-bridge-after-1-5k-deaths/ |website=CBS San Francisco |publisher=CBS Broadcasting Inc. |access-date=November 27, 2017 |language=en |date=April 13, 2017}}</ref> Installation of the nets was completed in January 2024.<ref name="abc7-3jan2024">{{cite news |last=Stone |first=J.R. |title=San Francisco installs $224M net to stop suicides off Golden Gate Bridge |url=https://abc7news.com/golden-gate-bridge-suicide-nets-kevin-hines-suicides-survivors/14268993/ |access-date=January 5, 2024 |work=] |date=January 3, 2024}}</ref> The metal nets are visible from the pedestrian walkways and are expected to be painful to land on.<ref name=":1" />


{{Clear}} {{Clear}}


===Wind=== ===Wind===
The Golden Gate Bridge was designed to safely withstand winds of up to {{convert|68|mph|km/h|0|abbr=on}}.<ref name=Chron-sing>{{cite news |first=Rachel |last=Swan |url=https://www.sfchronicle.com/bayarea/article/Hear-that-ghostly-hum-on-the-Golden-Gate-Bridge-15321948.php |title=Hear that ghostly hum on the Golden Gate Bridge? It's here to stay |newspaper=San Francisco Chronicle |date=June 8, 2020 }}</ref> Until 2008, the bridge was closed because of weather conditions only three times: on December 1, 1951, because of gusts of {{convert|69|mph|km/h|0|abbr=on}}; on December 23, 1982, because of winds of {{convert|70|mph|km/h|0|abbr=on}}; and on December 3, 1983, because of wind gusts of {{convert|75|mph|km/h|0|abbr=on}}.<ref name="goldengatebridge facts">{{cite web |url=http://goldengatebridge.org/research/facts.php |title=Frequently Asked Questions about the Golden Gate Bridge |publisher=Golden Gate Bridge, Highway and Transportation District |access-date=March 12, 2008}}</ref> An ] placed midway between the two towers on the west side of the bridge, has been used to measure wind speeds. Another anemometer was placed on one of the towers. The Golden Gate Bridge was designed to safely withstand winds of up to {{convert|68|mph|km/h|0|abbr=on}}.<ref name=Chron-sing>{{cite news |first=Rachel |last=Swan |url=https://www.sfchronicle.com/bayarea/article/Hear-that-ghostly-hum-on-the-Golden-Gate-Bridge-15321948.php |title=Hear that ghostly hum on the Golden Gate Bridge? It's here to stay |newspaper=San Francisco Chronicle |date=June 8, 2020 }}</ref> Until 2008, the bridge was closed because of weather conditions only three times: on December 1, 1951, because of gusts of {{convert|69|mph|km/h|0|abbr=on}}; on December 23, 1982, because of winds of {{convert|70|mph|km/h|0|abbr=on}}; and on December 3, 1983, because of wind gusts of {{convert|75|mph|km/h|0|abbr=on}}.<ref name="goldengatebridge facts">{{cite web |url=http://goldengatebridge.org/research/facts.php |title=Frequently Asked Questions about the Golden Gate Bridge |publisher=Golden Gate Bridge, Highway and Transportation District |access-date=March 12, 2008 |archive-date=August 10, 2015 |archive-url=https://web.archive.org/web/20150810050111/http://goldengatebridge.org/research/facts.php |url-status=dead }}</ref> An ] placed midway between the two towers on the west side of the bridge has been used to measure wind speeds. Another anemometer was placed on one of the towers.


As part of the retrofitting of the bridge and installation of the suicide barrier, starting in 2019 the railings on the west side of the pedestrian walkway were replaced with thinner, more flexible ] in order to improve the bridge's aerodynamic tolerance of high wind to {{convert|100|mph|km/h|0|abbr=on}}. Starting in June 2020, reports were received of a loud hum, heard across San Francisco and Marin County, produced by the new railing slats when a strong west wind was blowing.<ref name="bridge harmonic resonance issues">{{cite news |first=Eric |last=Ting |url=https://www.sfgate.com/bayarea/article/Golden-Gate-Bridge-noise-humming-why-wind-sound-15321767.php |title=Why the Golden Gate Bridge made strange noises with the wind Friday |newspaper=San Francisco Chronicle |date=June 6, 2020}}</ref> The sound had been predicted from ] tests,<ref name=Chron-sing/> but not included in the environmental impact report; ways of ameliorating it are being considered.<ref>{{cite news |first=Andrew |last=Chamings |url=https://www.sfgate.com/living-in-sf/article/San-Francisco-Golden-Gate-Bridge-singing-fix-15379759.php |title=Golden Gate Bridge officials look to fix 'screeching that sounds like torture' |newspaper=San Francisco Chronicle |date=July 1, 2020 }}</ref> As part of the retrofitting of the bridge and installation of the suicide barrier, starting in 2019 the railings on the west side of the pedestrian walkway were replaced with thinner, more flexible ] in order to improve the bridge's aerodynamic tolerance of high wind to {{convert|100|mph|km/h|0|abbr=on}}. Starting in June 2020, reports were received of a loud hum, heard across San Francisco and Marin County, produced by the new railing slats when a strong west wind was blowing.<ref name="bridge harmonic resonance issues">{{cite news |first=Eric |last=Ting |url=https://www.sfgate.com/bayarea/article/Golden-Gate-Bridge-noise-humming-why-wind-sound-15321767.php |title=Why the Golden Gate Bridge made strange noises with the wind Friday |newspaper=San Francisco Chronicle |date=June 6, 2020 |access-date=June 6, 2020 |archive-date=July 5, 2020 |archive-url=https://web.archive.org/web/20200705073455/https://www.sfgate.com/bayarea/article/Golden-Gate-Bridge-noise-humming-why-wind-sound-15321767.php }}</ref> The sound had been predicted from ] tests,<ref name=Chron-sing/> but not included in the environmental impact report; ways of ameliorating it are being considered.<ref>{{cite news |first=Andrew |last=Chamings |url=https://www.sfgate.com/living-in-sf/article/San-Francisco-Golden-Gate-Bridge-singing-fix-15379759.php |title=Golden Gate Bridge officials look to fix 'screeching that sounds like torture' |newspaper=San Francisco Chronicle |date=July 1, 2020 }}</ref> An independent engineering analysis of a 2020 sound recording of the tones concludes that the singing noise comprises a variety of ]s (the sound produced by air flowing past a sharp edge), arising in this case from the ambient wind blowing across metal slats of the newly installed sidewalk railings.<ref>{{cite web|url=https://vibrationdata.wordpress.com/2020/07/13/golden-gate-bridge-singing/|title=Golden Gate Bridge Singing|website=Vibrationdata: Shock & Vibration Software & Tutorials|author=Tom Irvine|date=July 13, 2020|access-date=December 1, 2021}}</ref> The tones observed were frequencies of 354, 398, 439 and 481&nbsp;Hz, corresponding to the ]s F<sub>4</sub>, G<sub>4</sub>, A<sub>4</sub>, and B<sub>4</sub>; these notes form an F Lydian Tetrachord.


{{Anchor|Seismic retrofit}} {{Anchor|Seismic retrofit}}


===Seismic vulnerability and improvements=== ===Seismic vulnerability and improvements===
] ] (short black cylinders) added as part of the Seismic Retrofit Construction Project]]
Modern knowledge of the effect of earthquakes on structures led to a program to ] the Golden Gate to better resist seismic events. The proximity of the bridge to the ] places it at risk for a significant earthquake. Once thought to have been able to withstand any magnitude of foreseeable earthquake, the bridge was actually vulnerable to complete structural failure (i.e., collapse) triggered by the failure of supports on the {{convert|320|ft|m|adj=on}} arch over ].<ref>{{cite news |title=70 Years: Spanning the Golden Gate: New will blend in with the old as part of bridge earthquake retrofit project |first=Carl |last=Nolte |author-link=Carl Nolte |newspaper=San Francisco Chronicle |date=May 28, 2007 |url=https://www.sfgate.com/bayarea/article/70-YEARS-Spanning-the-Golden-Gate-New-will-2558505.php }}</ref> A $392&nbsp;million program was initiated to improve the structure's ability to withstand such an event with only minimal (repairable) damage. A custom-built electro-hydraulic synchronous lift system for construction of temporary support towers and a series of intricate lifts, transferring the loads from the existing bridge onto the temporary supports, were completed with engineers from ] and ], without disrupting day-to-day commuter traffic.<ref>. ''Roads&Bridges'' (December 28, 2000).</ref><ref name = "retrofit">{{cite web |url=http://goldengatebridge.org/projects/retrofit.php |title=Overview of Golden Gate Bridge Seismic Retrofit |access-date=June 21, 2008 |author=Golden Gate Bridge Authority |date=May 2008}}</ref> Although the retrofit was initially planned to be completed in 2012, {{As of|2017|05|lc=y}} it was expected to take several more years.<ref name = "retrofit"/><ref>{{cite web |url=http://enr.construction.com/features/transportation/archives/050103-1.asp |title=Famed Golden Gate Span Undergoes Complex Seismic Revamp |access-date=June 21, 2008 |last=Gonchar |first=Joann |date=January 3, 2005 |publisher=McGraw-Hill Construction}}</ref><ref>{{Cite web|url=https://sanfrancisco.cbslocal.com/2017/05/24/costly-golden-gate-bridge-retrofit-still-years-away-from-completion/|title=Costly Golden Gate Bridge Retrofit Still Years Away From Completion|date=May 24, 2017|access-date=July 29, 2019}}</ref> Modern knowledge of the effect of earthquakes on structures led to a program to ] the Golden Gate to better resist seismic events. The proximity of the bridge to the ] places it at risk for a significant earthquake. Once thought to have been able to withstand any magnitude of foreseeable earthquake, the bridge was actually vulnerable to complete structural failure (i.e., collapse) triggered by the failure of supports on the {{convert|320|ft|m|adj=on}} arch over Fort Point.<ref>{{cite news |title=70 Years: Spanning the Golden Gate: New will blend in with the old as part of bridge earthquake retrofit project |first=Carl |last=Nolte |author-link=Carl Nolte |newspaper=San Francisco Chronicle |date=May 28, 2007 |url=https://www.sfgate.com/bayarea/article/70-YEARS-Spanning-the-Golden-Gate-New-will-2558505.php }}</ref> A $392&nbsp;million program was initiated to improve the structure's ability to withstand such an event with only minimal (repairable) damage. A custom-built electro-hydraulic synchronous lift system for construction of temporary support towers and a series of intricate lifts, transferring the loads from the existing bridge onto the temporary supports, were completed with engineers from ] and ], without disrupting day-to-day commuter traffic.<ref> {{Webarchive|url=https://web.archive.org/web/20210123132652/http://www.roadsbridges.com/showing-fancy-foot-work |date=January 23, 2021 }}. ''Roads&Bridges'' (December 28, 2000).</ref><ref name = "retrofit">{{cite web |url=http://goldengatebridge.org/projects/retrofit.php |title=Overview of Golden Gate Bridge Seismic Retrofit |access-date=June 21, 2008 |author=Golden Gate Bridge Authority |date=May 2008 |archive-date=June 16, 2008 |archive-url=https://web.archive.org/web/20080616091141/http://goldengatebridge.org/projects/retrofit.php |url-status=dead }}</ref> Although the retrofit was initially planned to be completed in 2012, {{As of|2017|05|lc=y}} it was expected to take several more years.<ref name = "retrofit"/><ref>{{cite web |url=http://enr.construction.com/features/transportation/archives/050103-1.asp |title=Famed Golden Gate Span Undergoes Complex Seismic Revamp |access-date=June 21, 2008 |last=Gonchar |first=Joann |date=January 3, 2005 |publisher=McGraw-Hill Construction}}</ref><ref>{{Cite web|url=https://sanfrancisco.cbslocal.com/2017/05/24/costly-golden-gate-bridge-retrofit-still-years-away-from-completion/|title=Costly Golden Gate Bridge Retrofit Still Years Away From Completion|date=May 24, 2017|access-date=July 29, 2019}}</ref>


{{Anchor|Doyle Drive replacement project}} {{Anchor|Doyle Drive replacement project}}
The former elevated approach to the Golden Gate Bridge through the ], known as Doyle Drive, dated to 1933 and was named after Frank P. Doyle. Doyle, the president of the Exchange Bank in Santa Rosa and son of the bank's founder, was the man who, more than any other person, made it possible to build the Golden Gate Bridge.<ref>{{cite book |url=http://www.presidioparkway.org/about/history.aspx |title=Presidio Parkway re-envisioning Doyle Drive |publisher=Presidio Parkway Project |access-date=May 6, 2010 |archive-date=December 26, 2009 |archive-url=https://web.archive.org/web/20091226180130/http://www.presidioparkway.org/about/history.aspx }}</ref> The highway carried about 91,000 vehicles each weekday between downtown San Francisco and the ] and points north.<ref>{{cite web |url=http://www.sfcta.org/content/view/275/94/ |title=Doyle Drive Replacement Project |publisher=San Francisco County Transportation Authority |access-date=May 6, 2010 |archive-url=https://web.archive.org/web/20100426064515/http://www.sfcta.org/content/view/275/94/ |archive-date=April 26, 2010 }}</ref> The road was deemed "vulnerable to earthquake damage", had a problematic 4-lane design, and lacked shoulders; a San Francisco County Transportation Authority study recommended that it be replaced. Construction on the $1&nbsp;billion replacement,<ref>{{cite web |url=https://www.sfgate.com/bayarea/article/Doyle-Drive-makeover-will-affect-drivers-soon-3276621.php |archive-url=https://web.archive.org/web/20100316012125/http://articles.sfgate.com/2010-01-05/bay-area/17466642_1_doyle-drive-caltrans-closures |url-status=live |archive-date=March 16, 2010 |title=Doyle Drive makeover will affect drivers soon |last=Cabanatuan |first=Michael |date=January 5, 2010 |newspaper=San Francisco Chronicle |access-date=May 6, 2010}}</ref> temporarily known as the Presidio Parkway, began in December 2009.<ref>{{cite book |url=http://www.presidioparkway.org/construction_info/ |title=Current Construction Activity |work=Presidio Parkway re-envisioning Doyle Drive |publisher=Presidio Parkway |access-date=May 6, 2010 |archive-date=April 26, 2010 |archive-url=https://web.archive.org/web/20100426112839/http://www.presidioparkway.org/construction%5Finfo/ }}</ref>

The elevated Doyle Drive was demolished on the weekend of April 27–30, 2012, and traffic used a part of the partially completed Presidio Parkway, until it was switched onto the finished Presidio Parkway on the weekend of July 9–12, 2015. {{as of|2012|May|}}, an official at Caltrans said there is no plan to permanently rename the portion known as Doyle Drive.<ref>{{cite news |url=http://www.pressdemocrat.com/article/20120501/news/205011005?tc=ar |title=Smith: It's wrecked, but it's still 'Doyle Drive' |newspaper=Press Democrat |date=May 1, 2012 |access-date=May 2, 2012 |archive-date=March 13, 2014 |archive-url=https://web.archive.org/web/20140313152842/http://www.pressdemocrat.com/article/20120501/news/205011005?tc=ar }}</ref>
The former elevated approach to the Golden Gate Bridge through the ], known as Doyle Drive, dated to 1933 and was named after Frank P. Doyle. Doyle, the president of the Exchange Bank in Santa Rosa and son of the bank's founder, was the man who, more than any other person, made it possible to build the Golden Gate Bridge.<ref>{{cite web |url=http://www.presidioparkway.org/about/history.aspx |title=Presidio Parkway re-envisioning Doyle Drive |publisher=Presidio Parkway Project |access-date=May 6, 2010}}</ref> The highway carried about 91,000 vehicles each weekday between downtown San Francisco and the ] and points north.<ref>{{cite web |url=http://www.sfcta.org/content/view/275/94/ |title=Doyle Drive Replacement Project |publisher=San Francisco County Transportation Authority |access-date=May 6, 2010 |archive-url=https://web.archive.org/web/20100426064515/http://www.sfcta.org/content/view/275/94/ |archive-date=April 26, 2010 |url-status=dead }}</ref> The road was deemed "vulnerable to earthquake damage", had a problematic 4-lane design, and lacked shoulders; a San Francisco County Transportation Authority study recommended that it be replaced. Construction on the $1&nbsp;billion replacement,<ref>{{cite web |url=http://articles.sfgate.com/2010-01-05/bay-area/17466642_1_doyle-drive-caltrans-closures |title=Doyle Drive makeover will affect drivers soon |last=Cabanatuan |first=Michael |date=January 5, 2010 |newspaper=San Francisco Chronicle |access-date=May 6, 2010}}</ref> temporarily known as the Presidio Parkway, began in December 2009.<ref>{{cite web |url=http://www.presidioparkway.org/construction_info/ |title=Current Construction Activity |work=Presidio Parkway re-envisioning Doyle Drive |publisher=Presidio Parkway |access-date=May 6, 2010}}</ref>
The elevated Doyle Drive was demolished on the weekend of April 27–30, 2012, and traffic used a part of the partially completed Presidio Parkway, until it was switched onto the finished Presidio Parkway on the weekend of July 9–12, 2015. {{as of|2012|May|}}, an official at Caltrans said there is no plan to permanently rename the portion known as Doyle Drive.<ref>{{cite news |url=http://www.pressdemocrat.com/article/20120501/news/205011005?tc=ar |title=Smith: It's wrecked, but it's still 'Doyle Drive' |newspaper=Press Democrat |date=May 1, 2012}}</ref>
{{Clear}} {{Clear}}


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{{comparison_of_notable_bridges.svg}} {{comparison_of_notable_bridges.svg}}


{{Wide image|San_Francisco_with_two_bridges_and_the_low_fog.jpg|800px|Panorama of San Francisco with two bridges (Western section of Bay Bridge in the left background), ] (in background to the left of north tower), and ] (on the San Francisco waterfront in the background behind the north tower) from ]|center}} {{Wide image|San_Francisco_with_two_bridges_and_the_low_fog.jpg|800px|Panorama of San Francisco with two bridges (Western section of Bay Bridge in the left background), ] (in background to the left of north tower), and ] (on the San Francisco waterfront in the background behind the north tower) from Marin|center}}
{{Wide image|Golden Gate Bridge at night.jpg|800px|Panorama of the Golden Gate Bridge at night, with San Francisco in the background|center}} {{Wide image|Golden Gate Bridge at night.jpg|800px|Panorama of the Golden Gate Bridge at night, with San Francisco in the background|center}}


==See also== ==See also==
{{Portal|Transport|Engineering|San Francisco Bay Area}} {{Portal|Transport|Engineering|San Francisco Bay Area}}
* ], a bridge with a similar design in Portugal
* '']'', a 2006 documentary on suicides from the Bridge * '']'', a 2006 documentary on suicides from the Bridge
* ] * ]
* ]
* ] * ]
* ] * ]
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* ] * ]
* ] * ]
* ]


==References== ==References==
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==Further reading== ==Further reading==
* {{cite book|author=Cassady, Stephen|title=Spanning the Gate|publisher=Squarebooks|isbn=978-0916290368|date=1979|edition=Commemorative edition, 1987}} * {{cite book|author=Cassady, Stephen|title=Spanning the Gate|publisher=Squarebooks|isbn=978-0-916290-36-8|date=1979|edition=Commemorative edition, 1987}}
* {{cite book|author1=Dyble, Louise Nelson|title=Paying the Toll: Local Power, Regional Politics|author2=the Golden Gate Bridge|publisher=University of Pennsylvania Press|isbn=9780812222784|date=2009}} * {{cite book|author1=Dyble, Louise Nelson|title=Paying the Toll: Local Power, Regional Politics|author2=the Golden Gate Bridge|publisher=University of Pennsylvania Press|isbn=978-0-8122-2278-4|date=2009}}
* {{cite news |author=Friend, Tad |url=http://www.newyorker.com/fact/content/articles/031013fa_fact? |title=Jumpers: The fatal grandeur of the Golden Gate Bridge |work=] |date=October 13, 2003 |volume=79 |issue=30 |page=48 |url-status=dead |archive-url=https://web.archive.org/web/20061108171731/http://www.newyorker.com/fact/content/articles/031013fa_fact |archive-date=November 8, 2006 }} * {{cite magazine |author=Friend, Tad |url=http://www.newyorker.com/fact/content/articles/031013fa_fact? |title=Jumpers: The fatal grandeur of the Golden Gate Bridge |magazine=] |date=October 13, 2003 |volume=79 |issue=30 |page=48 |archive-url=https://web.archive.org/web/20061108171731/http://www.newyorker.com/fact/content/articles/031013fa_fact |archive-date=November 8, 2006 }}
* {{cite news |author1 =Guthman, Edward |url=http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2005/10/30/MNG2NFF7KI1.DTL |title=Lethal Beauty / The Allure: Beauty |author2 =an easy route to death have long made the Golden Gate Bridge a magnet for suicides |work=] |date=October 30, 2005}} * {{cite news |author1 =Guthman, Edward |url=http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2005/10/30/MNG2NFF7KI1.DTL |title=Lethal Beauty / The Allure: Beauty |author2 =an easy route to death have long made the Golden Gate Bridge a magnet for suicides |work=] |date=October 30, 2005}}
* {{cite book |author=Schwartz, Harvey |title=Building the Golden Gate Bridge: A Workers' Oral History |publisher=University of Washington Press |date=2015 |isbn=978-0295995069}} * {{cite book |author=Schwartz, Harvey |title=Building the Golden Gate Bridge: A Workers' Oral History |publisher=University of Washington Press |date=2015 |isbn=978-0-295-99506-9}}
* {{cite book|url=https://archive.org/details/goldengatelifeti00star|title=Golden Gate: The Life and Times of America's Greatest Bridge|author1=Starr, Kevin|author-link=Kevin Starr|date=2010|publisher=Bloomsbury Press|isbn=978-1-59691-534-3}} * {{cite book|url=https://archive.org/details/goldengatelifeti00star|title=Golden Gate: The Life and Times of America's Greatest Bridge|author1=Starr, Kevin|author-link=Kevin Starr|date=2010|publisher=Bloomsbury Press|isbn=978-1-59691-534-3}}
* {{cite web |url=http://www.vibrationdata.com/golden.htm |title=Golden Gate Bridge Natural Frequencies |website=Vibrationdata.com |date=April 5, 2006}} * {{cite web |url=http://www.vibrationdata.com/golden.htm |title=Golden Gate Bridge Natural Frequencies |website=Vibrationdata.com |date=April 5, 2006}}
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{{Commons and category|Golden Gate Bridge|Golden Gate Bridge}} {{Commons and category|Golden Gate Bridge|Golden Gate Bridge}}
* {{official website}} * {{official website}}
* – includes toll information on this and the other Bay Area toll facilities
* {{HAER |survey=CA-31 |id=ca1355 |title=Golden Gate Bridge |photos=41 |color=6 |data=2 |cap=4}}
* {{HAER |survey=CA-31 |id=ca1355 |title=Golden Gate Bridge |photos=41 |color=6 |data=1 |cap=4}}
* {{curlie|/Regional/North_America/United_States/California/Metro_Areas/San_Francisco_Bay_Area/Travel_and_Tourism/Attractions/Golden_Gate_Bridge/|Links for Golden Gate Bridge}}
* {{cite web |url=http://sflib1.sfpl.org:82/search~S0/?searchtype=X&searcharg=%22Bridges+--+Golden+Gate%22+&sortdropdown=-&SORT=D&extended=0&SUBMIT=Search&searchlimits=&searchorigarg=X%22s%3ABridges%22+--+Golden+Gate+%26SORT%3DD |title=Images of the Golden Gate Bridge |website=San Francisco Public Library's Historical Photograph database}} * {{cite web |url=http://sflib1.sfpl.org:82/search~S0/?searchtype=X&searcharg=%22Bridges+--+Golden+Gate%22+&sortdropdown=-&SORT=D&extended=0&SUBMIT=Search&searchlimits=&searchorigarg=X%22s%3ABridges%22+--+Golden+Gate+%26SORT%3DD |title=Images of the Golden Gate Bridge |website=San Francisco Public Library's Historical Photograph database}}
* {{cite news |url=https://diva.sfsu.edu/collections/sfbatv/bundles/191374 |date=1962 |work=KPIX-TV |author=Marshal 'J' (Narrator) |title=The Bridge Builders}} (A documentary film about the construction of the Golden Gate Bridge.) * {{cite news |url=https://diva.sfsu.edu/collections/sfbatv/bundles/191374 |date=1962 |work=KPIX-TV |author=Marshal 'J' (Narrator) |title=The Bridge Builders}} (A documentary film about the construction of the Golden Gate Bridge.)
* {{cite news |url=https://books.google.com/books?id=9ycDAAAAMBAJ&pg=PA25 |title=San Francisco To Have World's Greatest Bridge |date=March 1931 |work=Popular Science}} * {{cite news |url=https://books.google.com/books?id=9ycDAAAAMBAJ&pg=PA25 |title=San Francisco To Have World's Greatest Bridge |date=March 1931 |work=Popular Science}}
* {{cite web |url=http://sftodo.com/golden-gate-bridge-facts.html |title=Golden Gate Bridge facts |website=sftodo.com |access-date=February 3, 2015 |archive-date=February 3, 2015 |archive-url=https://web.archive.org/web/20150203203905/http://www.sftodo.com/golden-gate-bridge-facts.html |url-status=dead }} (Educational poster.) * {{cite web |url=http://sftodo.com/golden-gate-bridge-facts.html |title=Golden Gate Bridge facts |website=sftodo.com |access-date=February 3, 2015 |archive-date=February 3, 2015 |archive-url=https://web.archive.org/web/20150203203905/http://www.sftodo.com/golden-gate-bridge-facts.html }} (Educational poster.)
* {{cite web |url=http://goldengatebridgemovie.blogspot.com/ |website=Golden Gate Bridge Movie |title=End of Land Sadness&nbsp;– The history of Suicide and the Golden Gate Bridge}} * {{cite web |url=http://goldengatebridgemovie.blogspot.com/ |website=Golden Gate Bridge Movie |title=End of Land Sadness&nbsp;– The history of Suicide and the Golden Gate Bridge}}


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Latest revision as of 04:48, 17 December 2024

San Francisco Bay suspension bridge

Golden Gate Bridge
View from the Presidio of San Francisco, 2017
Coordinates37°49′11″N 122°28′43″W / 37.81972°N 122.47861°W / 37.81972; -122.47861
Carries
CrossesGolden Gate
LocaleSan Francisco, California and Marin County, California, U.S.
Official nameGolden Gate Bridge
Maintained byGolden Gate Bridge, Highway and Transportation District
Websitegoldengate.org/bridge
Characteristics
DesignSuspension, Art Deco, truss arch & truss causeways
MaterialSteel
Total length8980 ft, about 1.70 mi (2.74 km)
Width90 ft (27.4 m)
Height746 ft (227.4 m)
Longest span4200 ft, about 0.79 mi (1.27 km)
Clearance above14 ft (4.3 m) at toll gates
Clearance below220 ft (67.1 m) at high tide
History
ArchitectIrving Morrow
Engineering design byJoseph Strauss, Charles Ellis, Leon Solomon Moisseiff
Constructed byBarrett and Hilp
Construction startJanuary 5, 1933 (1933-01-05)
Construction endApril 19, 1937 (1937-04-20)
OpenedMay 27, 1937; 87 years ago (1937-05-27)
Statistics
Daily traffic88,716 (FY2020)
Toll
  • Southbound only
  • FasTrak or pay-by-plate, cash not accepted
  • Effective July 1, 2024 – June 30, 2025 (2024-07-01 – 2025-06-30):
  • $9.25 (FasTrak users)
  • $9.50 (Pay-by-plate users)
  • $7.25 (carpools during peak hours, FasTrak only)
California Historical Landmark
DesignatedJune 18, 1987
Reference no.974
San Francisco Designated Landmark
DesignatedMay 21, 1999
Reference no.222
Location

The Golden Gate Bridge is a suspension bridge spanning the Golden Gate, the one-mile-wide (1.6 km) strait connecting San Francisco Bay and the Pacific Ocean. The structure links the U.S. city of San Francisco, California—the northern tip of the San Francisco Peninsula—to Marin County, carrying both U.S. Route 101 and California State Route 1 across the strait. It also carries pedestrian and bicycle traffic, and is designated as part of U.S. Bicycle Route 95. Recognized by the American Society of Civil Engineers as one of the Wonders of the Modern World, the bridge is one of the most internationally recognized symbols of San Francisco and California.

The idea of a fixed link between San Francisco and Marin had gained increasing popularity during the late 19th century, but it was not until the early 20th century that such a link became feasible. Joseph Strauss served as chief engineer for the project, with Leon Moisseiff, Irving Morrow and Charles Ellis making significant contributions to its design. The bridge opened to the public in 1937 and has undergone various retrofits and other improvement projects in the decades since.

The Golden Gate Bridge is described in Frommer's travel guide as "possibly the most beautiful, certainly the most photographed, bridge in the world." At the time of its opening in 1937, it was both the longest and the tallest suspension bridge in the world, titles it held until 1964 and 1998 respectively. Its main span is 4,200 feet (1,280 m) and its total height is 746 feet (227 m).

History

Ferry service

Further information: Ferries of San Francisco Bay

Before the bridge was built, the only practical short route between San Francisco and what is now Marin County was by boat across a section of San Francisco Bay. A ferry service began as early as 1820, with a regularly scheduled service beginning in the 1840s for the purpose of transporting water to San Francisco.

In 1867, the Sausalito Land and Ferry Company opened. In 1920, the service was taken over by the Golden Gate Ferry Company, which merged in 1929 with the ferry system of the Southern Pacific Railroad, becoming the Southern Pacific-Golden Gate Ferries, Ltd., the largest ferry operation in the world. Once for railroad passengers and customers only, Southern Pacific's automobile ferries became very profitable and important to the regional economy. The ferry crossing between the Hyde Street Pier in San Francisco and Sausalito Ferry Terminal in Marin County took approximately 20 minutes and cost $1.00 per vehicle prior to 1937, when the price was reduced to compete with the new bridge. The trip from the San Francisco Ferry Building took 27 minutes.

Many wanted to build a bridge to connect San Francisco to Marin County. San Francisco was the largest American city still served primarily by ferry boats. Because it did not have a permanent link with communities around the bay, the city's growth rate was below the national average. Many experts said that a bridge could not be built across the 6,700-foot (2,000-metre) strait, which had strong, swirling tides and currents, with water 372 ft (113 m) deep at the center of the channel, and frequent strong winds. Experts said that ferocious winds and blinding fogs would prevent construction and operation.

Conception

Golden Gate with Fort Point in foreground, c. 1891

Although the idea of a bridge spanning the Golden Gate was not new, the proposal that eventually took hold was made in a 1916 San Francisco Bulletin article by former engineering student James Wilkins. San Francisco's City Engineer estimated the cost at $100 million (equivalent to $2.8 billion in 2023), and impractical for the time. He asked bridge engineers whether it could be built for less. One who responded, Joseph Strauss, was an ambitious engineer and poet who had, for his graduate thesis, designed a 55-mile-long (89 km) railroad bridge across the Bering Strait. At the time, Strauss had completed some 400 drawbridges—most of which were inland—and nothing on the scale of the new project. Strauss's initial drawings were for a massive cantilever on each side of the strait, connected by a central suspension segment, which Strauss promised could be built for $17 million (equivalent to $476 million in 2023).

A suspension-bridge design was chosen, using recent advances in bridge design and metallurgy.

Strauss spent more than a decade drumming up support in Northern California. The bridge faced opposition, including litigation, from many sources. The Department of War was concerned that the bridge would interfere with ship traffic. The US Navy feared that a ship collision or sabotage to the bridge could block the entrance to one of its main harbors. Unions demanded guarantees that local workers would be favored for construction jobs. Southern Pacific Railroad, one of the most powerful business interests in California, opposed the bridge as competition to its ferry fleet and filed a lawsuit against the project, leading to a mass boycott of the ferry service.

In May 1924, Colonel Herbert Deakyne held the second hearing on the Bridge on behalf of the Secretary of War in a request to use federal land for construction. Deakyne, on behalf of the Secretary of War, approved the transfer of land needed for the bridge structure and leading roads to the "Bridging the Golden Gate Association" and both San Francisco County and Marin County, pending further bridge plans by Strauss. Another ally was the fledgling automobile industry, which supported the development of roads and bridges to increase demand for automobiles.

The bridge's name was first used when the project was initially discussed in 1917 by M.M. O'Shaughnessy, city engineer of San Francisco, and Strauss. The name became official with the passage of the Golden Gate Bridge and Highway District Act by the state legislature in 1923, creating a special district to design, build and finance the bridge. San Francisco and most of the counties along the North Coast of California joined the Golden Gate Bridge District, with the exception being Humboldt County, whose residents opposed the bridge's construction and the traffic it would generate.

Design

South tower seen from walkway, with Art Deco elements

Strauss was the chief engineer in charge of the overall design and construction of the bridge project. However, because he had little understanding or experience with cable-suspension designs, responsibility for much of the engineering and architecture fell on other experts. Strauss's initial design proposal (two double cantilever spans linked by a central suspension segment) was unacceptable from a visual standpoint. The final suspension design was conceived and championed by Leon Moisseiff, the engineer of the Manhattan Bridge in New York City.

Irving Morrow, a relatively unknown residential architect, designed the overall shape of the bridge towers, the lighting scheme, and Art Deco elements, such as the tower decorations, streetlights, railing, and walkways. The famous International Orange color was Morrow's personal selection, winning out over other possibilities, including the US Navy's suggestion that it be painted with black and yellow stripes to ensure visibility by passing ships.

Senior engineer Charles Alton Ellis, collaborating remotely with Moisseiff, was the principal engineer of the project. Moisseiff produced the basic structural design, introducing his "deflection theory" by which a thin, flexible roadway would flex in the wind, greatly reducing stress by transmitting forces via suspension cables to the bridge towers. Although the Golden Gate Bridge design has proved sound, a later Moisseiff design, the original Tacoma Narrows Bridge, collapsed in a strong windstorm soon after it was completed, because of an unexpected aeroelastic flutter. Ellis was also tasked with designing a "bridge within a bridge" in the southern abutment, to avoid the need to demolish Fort Point, a pre–Civil War masonry fortification viewed, even then, as worthy of historic preservation. He penned a graceful steel arch spanning the fort and carrying the roadway to the bridge's southern anchorage.

Below Golden Gate Bridge

Ellis was a Greek scholar and mathematician who at one time was a University of Illinois professor of engineering despite having no engineering degree. He eventually earned a degree in civil engineering from the University of Illinois prior to designing the Golden Gate Bridge and spent the last twelve years of his career as a professor at Purdue University. He became an expert in structural design, writing the standard textbook of the time. Ellis did much of the technical and theoretical work that built the bridge, but he received none of the credit in his lifetime. In November 1931, Strauss fired Ellis and replaced him with a former subordinate, Clifford Paine, ostensibly for wasting too much money sending telegrams back and forth to Moisseiff. Ellis, obsessed with the project and unable to find work elsewhere during the Depression, continued working 70 hours per week on an unpaid basis, eventually turning in ten volumes of hand calculations.

With an eye toward self-promotion and posterity, Strauss downplayed the contributions of his collaborators who, despite receiving little recognition or compensation, are largely responsible for the final form of the bridge. He succeeded in having himself credited as the person most responsible for the design and vision of the bridge. Only much later were the contributions of the others on the design team properly appreciated. In May 2007, the Golden Gate Bridge District issued a formal report on 70 years of stewardship of the famous bridge and decided to give Ellis major credit for the design of the bridge.

Panorama showing the height, depth, and length of the span from end to end, looking west Panorama of the Golden Gate Bridge at sunset, as seen from just north of Alcatraz Island

Finance

The Golden Gate Bridge and Highway District, authorized by an act of the California Legislature, was incorporated in 1928 as the official entity to design, construct, and finance the Golden Gate Bridge. However, after the Wall Street Crash of 1929, the District was unable to raise the construction funds, so it lobbied for a $30 million bond measure (equivalent to $532 million today). The bonds were approved in November 1930, by votes in the counties affected by the bridge. The construction budget at the time of approval was $27 million ($492 million today). However, the District was unable to sell the bonds until 1932, when Amadeo Giannini, the founder of San Francisco–based Bank of America, agreed on behalf of his bank to buy the entire issue in order to help the local economy.

Construction

Construction began on January 5, 1933. The project cost more than $35 million ($610 million in 2023 dollars), and was completed ahead of schedule and $1.3 million under budget (equivalent to $28.9 million today). The Golden Gate Bridge construction project was carried out by the McClintic-Marshall Construction Co., a subsidiary of Bethlehem Steel Corporation founded by Howard H. McClintic and Charles D. Marshall, both of Lehigh University.

An original rivet replaced during the seismic retrofit after the 1989 Loma Prieta earthquake. A total of 1.2 million steel rivets hold the bridge's two towers together.

Strauss remained head of the project, overseeing day-to-day construction and making some groundbreaking contributions. A graduate of the University of Cincinnati, he placed a brick from his alma mater's demolished McMicken Hall in the south anchorage before the concrete was poured.

Strauss also innovated the use of movable safety netting beneath the men working, which saved many lives. Nineteen men saved by the nets over the course of the project formed the Half Way to Hell Club. Nonetheless, eleven men were killed in falls, ten on February 17, 1937, when a scaffold (secured by undersized bolts) with twelve men on it fell into and broke through the safety net; two of the twelve survived the 200-foot (61 m) fall into the water.

The bridge opened May 27, 1937.

The Round House Café diner was then included in the southeastern end of the Golden Gate Bridge, adjacent to the tourist plaza which was renovated in 2012. The Round House Café, an Art Deco design by Alfred Finnila completed in 1938, has been popular throughout the years as a starting point for various commercial tours of the bridge and an unofficial gift shop. The diner was renovated in 2012 and the gift shop was then removed as a new, official gift shop has been included in the adjacent plaza.

During the bridge work, the Assistant Civil Engineer of California Alfred Finnila had overseen the entire iron work of the bridge as well as half of the bridge's road work.

Contributors

Plaque of the major contributors to the Golden Gate Bridge lists contractors, engineering-staff, directors and officers:

Contractors

Engineering staff

  • Chief engineer - Joseph B. Strauss
  • Principal assistant engineer - Clifford E. Paine
  • Resident engineer - Russell Cone
  • Assistant engineer - Charles Clarahan Jr., Dwight N. Wetherell
  • Consulting engineer - O.H. Ammann, Charles Derleth Jr., Leon S. Moisseiff
  • Consulting traffic engineer - Sydney W. Taylor Jr.
  • Consulting architect - Irving F. Morrow
  • Consulting geologist - Andrew C. Lawson, Allan E. Sedgwick

Directors

  • San Francisco - William P. Filmer, Richard J. Welch, Warren Shannon, Hugo D. Newhouse, Arthur M. Brown Jr., John P. McLaughlin, William D. Hadeler, C.A. Henry, Francis V. Keesling, William P. Stanton, George T. Cameron
  • Marin County - Robert H. Trumbull, Harry Lutgens
  • Napa County - Thomas Maxwell
  • Sonoma County - Frank P. Doyle, Joseph A. McMinn
  • Mendocino County - A. R. O'Brien
  • Del Norte County - Henry Westbrook Jr., Milton M. McVay

Officers

  • President - William P. Filmer
  • Vice President - Robert H. Trumbull
  • General manager - James Reed, Alan McDonald
  • Chief engineer - Joseph B. Strauss
  • Secretary - W. W. Felt Jr.
  • Auditor - Roy S. West, John R. Ruckstell
  • Attorney - George H. Harlan

Torsional bracing retrofit

On December 1, 1951, a windstorm revealed swaying and rolling instabilities of the bridge, resulting in its closure. In 1953 and 1954, the bridge was retrofitted with lateral and diagonal bracing that connected the lower chords of the two side trusses. This bracing stiffened the bridge deck in torsion so that it would better resist the types of twisting that had destroyed the Tacoma Narrows Bridge in 1940.

Bridge deck replacement (1982–1986)

The original bridge used a concrete deck. Salt carried by fog or mist reached the rebar, causing corrosion and concrete spalling. From 1982 to 1986, the original bridge deck, in 747 sections, was systematically replaced with a 40% lighter, and stronger, steel orthotropic deck panels, over 401 nights without closing the roadway completely to traffic. The roadway was also widened by two feet, resulting in outside curb lane width of 11 feet, instead of 10 feet for the inside lanes. This deck replacement was the bridge's greatest engineering project since it was built and cost over $68 million.

Opening festivities, and 50th and 75th anniversaries

A plaque on the south tower commemorating the 25th anniversary of the bridge
The Golden Gate Bridge and Fort Point

The bridge-opening celebration in 1937 began on May 27 and lasted for one week. The day before vehicle traffic was allowed, 200,000 people crossed either on foot or on roller skates. On opening day, Mayor Angelo Rossi and other officials rode the ferry to Marin, then crossed the bridge in a motorcade past three ceremonial "barriers," the last a blockade of beauty queens who required Joseph Strauss to present the bridge to the Highway District before allowing him to pass. An official song, "There's a Silver Moon on the Golden Gate," was chosen to commemorate the event. Strauss wrote a poem that is now on the Golden Gate Bridge entitled "The Mighty Task is Done." The next day, President Franklin D. Roosevelt pushed a button in Washington, D.C. signaling the official start of vehicle traffic over the Bridge at noon. Weeks of civil and cultural activities called "the Fiesta" followed. A statue of Strauss was moved in 1955 to a site near the bridge.

As part of the fiftieth anniversary celebration in 1987, the Golden Gate Bridge district again closed the bridge to automobile traffic and allowed pedestrians to cross it on May 24. This Sunday morning celebration attracted 750,000 to 1,000,000 people, and ineffective crowd control meant the bridge became congested with roughly 300,000 people, causing the center span of the bridge to flatten out under the weight. Although the bridge is designed to flex in that way under heavy loads, and was estimated not to have exceeded 40% of the yielding stress of the suspension cables, bridge officials stated that uncontrolled pedestrian access was not being considered as part of the 75th anniversary on Sunday, May 27, 2012, because of the additional law enforcement costs required "since 9/11."

  • A pedestrian poses at the old railing on opening day, 1937. A pedestrian poses at the old railing on opening day, 1937.
  • Opening of the Golden Gate Bridge
  • Official invitation to the opening of the bridge. This copy was sent to the City of Seattle. Official invitation to the opening of the bridge. This copy was sent to the City of Seattle.

Structural specifications

On the south side of the bridge a 36.5-inch-wide (93 cm) cross-section of the cable, containing 27,572 wires, is on display.

Until 1964, the Golden Gate Bridge had the longest suspension bridge main span in the world, at 4,200 feet (1,280 m). Since 1964 its main span length has been surpassed by eighteen bridges; it now has the second-longest main span in the Americas, after the Verrazzano-Narrows Bridge in New York City. The total length of the Golden Gate Bridge from abutment to abutment is 8,981 feet (2,737 m).

The Golden Gate Bridge's clearance above high water averages 220 feet (67 m) while its towers, at 746 feet (227 m) above the water, were the world's tallest on a suspension bridge until 1993 when it was surpassed by the Mezcala Bridge, in Mexico.

The weight of the roadway is hung from 250 pairs of vertical suspender ropes, which are attached to two main cables. The main cables pass over the two main towers and are fixed in concrete at each end. Each cable is made of 27,572 strands of wire. The total length of galvanized steel wire used to fabricate both main cables is estimated to be 80,000 miles (130,000 km). Each of the bridge's two towers has approximately 600,000 rivets.

In the 1960s, when the Bay Area Rapid Transit system (BART) was being planned, the engineering community had conflicting opinions about the feasibility of running train tracks north to Marin County over the bridge. In June 1961, consultants hired by BART completed a study that determined the bridge's suspension section was capable of supporting service on a new lower deck. In July 1961, one of the bridge's consulting engineers, Clifford Paine, disagreed with their conclusion. In January 1962, due to more conflicting reports on feasibility, the bridge's board of directors appointed an engineering review board to analyze all the reports. The review board's report, released in April 1962, concluded that running BART on the bridge was not advisable.

Aesthetics

Aesthetics was the foremost reason why the first design of Joseph Strauss was rejected. Upon re-submission of his bridge construction plan, he added details, such as lighting, to outline the bridge's cables and towers. In 1999, it was ranked fifth on the List of America's Favorite Architecture by the American Institute of Architects.

The color of the bridge is officially an orange vermilion called international orange. The color was selected by consulting architect Irving Morrow because it complements the natural surroundings and enhances the bridge's visibility in fog.

The bridge was originally painted with red lead primer and a lead-based topcoat, which was touched up as required. In the mid-1960s, a program was started to improve corrosion protection by stripping the original paint and repainting the bridge with zinc silicate primer and vinyl topcoats. Since 1990, acrylic topcoats have been used instead for air-quality reasons. The program was completed in 1995 and it is now maintained by 38 painters who touch up the paintwork where it becomes seriously corroded. The ongoing maintenance task of painting the bridge is continuous.

  • A view of the Golden Gate Bridge from the Marin Headlands on a foggy morning at sunrise A view of the Golden Gate Bridge from the Marin Headlands on a foggy morning at sunrise
  • View of Marin from the south tower View of Marin from the south tower
  • Top of the south tower Top of the south tower

Traffic

Installation of the movable median barrier system in January 2015
Testing the newly installed movable barrier

Most maps and signage mark the bridge as part of the concurrency between U.S. Route 101 and California State Route 1. Although part of the National Highway System, the bridge is not officially part of California's Highway System. For example, under the California Streets and Highways Code § 401, Route 101 ends at "the approach to the Golden Gate Bridge" and then resumes at "a point in Marin County opposite San Francisco". The Golden Gate Bridge, Highway and Transportation District has jurisdiction over the segment of highway that crosses the bridge instead of the California Department of Transportation (Caltrans).

The movable median barrier between the lanes is moved several times daily to conform to traffic patterns. On weekday mornings, traffic flows mostly southbound into the city, so four of the six lanes run southbound. Conversely, on weekday afternoons, four lanes run northbound. During off-peak periods and weekends, traffic is split with three lanes in each direction.

From 1968 to 2015, opposing traffic was separated by small, plastic pylons; during that time, there were 16 fatalities resulting from 128 head-on collisions. To improve safety, the speed limit on the Golden Gate Bridge was reduced from 50 to 45 mph (80 to 72 km/h) on October 1, 1983. Although there had been discussion concerning the installation of a movable barrier since the 1980s, only in March 2005 did the Bridge Board of Directors commit to finding funding to complete the $2 million study required prior to the installation of a movable median barrier. Installation of the resulting barrier was completed on January 11, 2015, following a closure of 45.5 hours to private vehicle traffic, the longest in the bridge's history. The new barrier system, including the zipper trucks, cost approximately $30.3 million to purchase and install.

The bridge carries about 112,000 vehicles per day according to the Golden Gate Bridge Highway and Transportation District.

Usage and tourism

See also: Golden Gate National Recreation Area
Looking north with traffic and current flow into the bay with sailboats

The bridge is popular with pedestrians and bicyclists, and was built with walkways on either side of the six vehicle traffic lanes. Initially, they were separated from the traffic lanes by only a metal curb, but railings between the walkways and the traffic lanes were added in 2003, primarily as a measure to prevent bicyclists from falling into the roadway. The bridge was designated as part of U.S. Bicycle Route 95 in 2021.

The main walkway is on the eastern side, and is open for use by both pedestrians and bicycles in the morning to mid-afternoon during weekdays (5:00 a.m. to 3:30 p.m.), and to pedestrians only for the remaining daylight hours (until 6:00 p.m., or 9:00 p.m. during DST). The eastern walkway is reserved for pedestrians on weekends (5:00 a.m. to 6:00 p.m., or 9:00 p.m. during DST), and is open exclusively to bicyclists in the evening and overnight, when it is closed to pedestrians. The western walkway is open only for bicyclists and only during the hours when they are not allowed on the eastern walkway.

Bus service across the bridge is provided by one public transportation agency, Golden Gate Transit, which runs numerous bus lines throughout the week. The southern end of the bridge, near the toll plaza and parking lot, is also accessible daily from 5:30 a.m. to midnight by San Francisco Muni line 28. Muni formerly offered Saturday and Sunday service across the bridge on the Marin Headlands Express bus line, but this was indefinitely suspended due to the COVID-19 pandemic. The Marin Airporter, a private company, also offers service across the bridge between Marin County and San Francisco International Airport.

A visitor center and gift shop, originally called the "Bridge Pavilion" (since renamed the "Golden Gate Bridge Welcome Center"), is located on the San Francisco side of the bridge, adjacent to the southeast parking lot. It opened in 2012, in time for the bridge's 75th-anniversary celebration. A cafe, outdoor exhibits, and restroom facilities are located nearby. On the Marin side of the bridge, only accessible from the northbound lanes, is the H. Dana Bower Rest Area and Vista Point, named after the first landscape architect for the California Division of Highways.

Lands and waters under and around the bridge are homes to varieties of wildlife such as bobcats, harbor seals, and sea lions. Three species of cetaceans (whales) that had been absent in the area for many years have shown recent recoveries/(re)colonizations in the vicinity of the bridge; researchers studying them have encouraged stronger protections and recommended that the public watch them from the bridge or from land, or use a local whale watching operator.

Tolls

Current toll rates

Tolls are only collected from southbound traffic at the toll plaza on the San Francisco side of the bridge. All-electronic tolling has been in effect since 2013, and drivers may either pay using the FasTrak electronic toll collection device, using the license plate tolling program, or via a one time payment online. Effective July 1, 2025 (2025-07-01), the regular toll rate for passenger cars is $9.50, with FasTrak users paying a discounted toll of $9.25. During peak traffic hours, carpool vehicles carrying three or more people, or motorcycles may pay a discounted toll of $7.25 if they have FasTrak and use the designated carpool lane. Drivers must pay within 48 hours after crossing the bridge or they will be sent a toll violation invoice. The toll violation penalty is $10.25.

Historical toll rates

Golden Gate Bridge at sunset

When the Golden Gate Bridge opened in 1937, the toll was 50 cents per car (equivalent to $10.6 in 2023), collected in each direction. In 1950 it was reduced to 40 cents each way ($5.07 in 2023), then lowered to 25 cents in 1955 ($2.84 in 2023). In 1968, the bridge was converted to only collect tolls from southbound traffic, with the toll amount reset back to 50 cents ($4.38 in 2023).

From May 1937 until December 1970, pedestrians were charged a toll of 10 cents for bridge access via turnstiles on the sidewalks.

The last of the construction bonds were retired in 1971, with $35 million (equivalent to $263M in 2023) in principal and nearly $39 million ($293M in 2023) in interest raised entirely from bridge tolls. Tolls continued to be collected and subsequently incrementally raised; in 1991, the toll was raised a dollar to $3.00 (equivalent to $6.71 in 2023).

The bridge began accepting tolls via the FasTrak electronic toll collection system in 2002, with $4 tolls for FasTrak users and $5 for those paying cash (equivalent to $6.78 and $8.47 respectively in 2023). In November 2006, the Golden Gate Bridge, Highway and Transportation District recommended a corporate sponsorship program for the bridge to address its operating deficit, projected at $80 million over five years. The District promised that the proposal, which it called a "partnership program", would not include changing the name of the bridge or placing advertising on the bridge itself. In October 2007, the Board unanimously voted to discontinue the proposal and seek additional revenue through other means, most likely a toll increase. The District later increased the toll amounts in 2008 to $5 for FasTrak users and $6 to those paying cash (equivalent to $7.08 and $8.49 respectively in 2023).

In an effort to save $19.2 million over the following 10 years, the Golden Gate District voted in January 2011 to eliminate all toll takers by 2012 and use only open road tolling. Subsequently, this was delayed and toll taker elimination occurred in March 2013. The cost savings have been revised to $19 million over an eight-year period. In addition to FasTrak, the Golden Gate Transportation District implemented the use of license plate tolling (branded as "Pay-by-Plate"), and also a one-time payment system for drivers to pay before or after their trip on the bridge. Twenty-eight positions were eliminated as part of this plan.

On April 7, 2014, the toll for users of FasTrak was increased from $5 to $6 (equivalent to $7.72 in 2023), while the toll for drivers using either the license plate tolling or the one time payment system was raised from $6 to $7 (equivalent to $9.01 in 2023). Bicycle, pedestrian, and northbound motor vehicle traffic remain toll free. For vehicles with more than two axles, the toll rate was $7 per axle for those using license plate tolling or the one time payment system, and $6 per axle for FasTrak users. During peak traffic hours, carpool vehicles carrying two or more people and motorcycles paid a discounted toll of $4 (equivalent to $5.15 in 2023); drivers must have had Fastrak to take advantage of this carpool rate. The Golden Gate Transportation District then increased the tolls by 25 cents in July 2015, and then by another 25 cents each of the next three years.

In March 2019, the Golden Gate Transportation District approved a plan to implement 35-cent annual toll increases through 2023, except for the toll-by-plate program which will increase by 20 cents per year. The district then approved another plan in March 2024 to implement 50-cent annual toll increases through 2028.

Golden Gate Bridge toll increases (2014–28)
Effective date FasTrak Toll-by-plate Toll invoice Carpool Multi-axle vehicle
April 7, 2014 $6.00 $7.00 $4.00 $7.00 per axle
July 1, 2015 $6.25 $7.25 $4.25 $7.25 per axle
July 1, 2016 $6.50 $7.50 $4.50 $7.50 per axle
July 1, 2017 $6.75 $7.75 $4.75 $7.75 per axle
July 1, 2018 $7.00 $8.00 $5.00 $8.00 per axle
July 1, 2019 $7.35 $8.20 $8.35 $5.35 $8.35 per axle
July 1, 2020 $7.70 $8.40 $8.70 $5.70 $8.70 per axle
July 1, 2021 $8.05 $8.60 $9.05 $6.05 $9.05 per axle
July 1, 2022 $8.40 $8.80 $9.40 $6.40 $9.40 per axle
July 1, 2023 $8.75 $9.00 $9.75 $6.75 $9.75 per axle
July 1, 2024 $9.25 $9.50 $10.25 $7.25 $10.25 per axle
July 1, 2025 $9.75 $10.00 $10.75 $7.75 $10.75 per axle
July 1, 2026 $10.25 $10.50 $11.25 $8.25 $11.25 per axle
July 1, 2027 $10.75 $11.00 $11.75 $8.75 $11.75 per axle
July 1, 2028 $11.25 $11.50 $12.25 $9.25 $12.25 per axle

Congestion pricing

Further information: San Francisco congestion pricing
Looking south

In March 2008, the Golden Gate Bridge District board approved a resolution to start congestion pricing at the Golden Gate Bridge, charging higher tolls during the peak hours, but rising and falling depending on traffic levels. This decision allowed the Bay Area to meet the federal requirement to receive $158 million in federal transportation funds from USDOT Urban Partnership grant. As a condition of the grant, the congestion toll was to be in place by September 2009.

In August 2008, transportation officials ended the congestion pricing program in favor of varying rates for metered parking along the route to the bridge including on Lombard Street and Van Ness Avenue.

Issues

Protests and stunts

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In August 1977, three California Polytechnic State University students climbed the cables of the Golden Gate Bridge.

In May 1981, Dave Aguilar climbed the South Tower of the Golden Gate Bridge to protest offshore oil drilling.

On November 24, 1996, environmentalists, including Woody Harrelson, were arrested after scaling the Golden Gate Bridge.

In 1997, Quentin Kopp authored a bill, that was signed into law by Pete Wilson that increased the maximum fine for trespassing on the bridge from $1,000 to $10,000 and doubled maximum jail time from six months to a year.

In July 2001, approximately 100 protesters gathered to demand an end to the U.S. Navy's bombing activities on the Puerto Rican island of Vieques.

During the 2008 Tibetan unrest, three pro-Tibet activists scaled the bridge's vertical cables in April 2008 to protest the arrival of the Olympic torch in the city. The activists hung banners to denounce China's crackdown on Tibet. The incident resulted in the closure of a northbound lane of the bridge and was part of a wave of protests across multiple cities against China's policies in Tibet.

On January 20, 2017, thousands of people held hands as a human chain on the sidewalk across the Golden Gate Bridge as Donald Trump took the oath of office.

On June 6, 2020, protesters shut down traffic on the Golden Gate Bridge in a demonstration against police brutality following the murder of George Floyd. The protest, originally confined to the pedestrian path, spilled into traffic lanes as activists knelt for eight minutes and 46 seconds, symbolizing the time a police officer knelt on Floyd's neck. Law enforcement was unable to redirect protesters, causing a complete closure of the bridge to traffic during the demonstration. This event was part of nationwide protests, with San Francisco lifting its curfew to allow continued gatherings in support of the movement.

Approximately 5,000 Armenian-Americans marched across the Golden Gate Bridge in October 2020 to raise awareness about an illegal blockade during the Nagorno-Karabakh conflict and to urge the US government to halt arms shipments to Turkey and Azerbaijan. Organized by the Armenian Youth Federation (AYF) San Francisco “Rosdom” Chapter, the demonstration aimed at informing Bay Area citizens about the violence against Armenians.

In June 2021, activists from the Sunrise Movement marched over 250 miles to advocate for climate action, culminating in a demonstration on the Golden Gate Bridge. Activists called for urgent measures to combat climate change, including the passage of President Joe Biden's American Jobs Plan, which includes funding for green energy jobs.

On September 30, 2021, protesters blocked traffic, urging Senate Democrats to address immigration reform and advocate for citizenship for undocumented immigrants and Haitian refugees. Five organizers, including an undocumented individual, were arrested during the demonstration.

In November 2021, a protest against government-mandated COVID-19 vaccinations led to a chain-reaction crash at the bridge. During the demonstration, a vehicle collision occurred involving two California Highway Patrol officers and three Golden Gate Bridge employees. The individuals were hospitalized with not life-threatening injuries.

Protests over the death of Mahsa Amini occurred on September 26, 2022. Over 1,000 protesters gathered at the Golden Gate Bridge Welcome Center to demonstrate against the Islamic Republic of Iran and its morality police following the death of Amini, who had been detained after an encounter with Tehran police, leading to her subsequent coma and death. The protest attendees voiced demands for women's rights and freedom, displayed signs and carrying former imperial state Iranian flags. The event drew attention globally, sparking solidarity protests in Iran, Greece, England, and France.

On February 14, 2024, a pro-Palestinian protest temporarily halted traffic on the Golden Gate Bridge. Around 20 protesters gathered on the bridge, displaying banners condemning the Israeli invasion of the Gaza Strip, and calling for an end to U.S. military support to Israel. The demonstration caused a standstill in both northbound and southbound traffic.

Pro-Palestinian protesters staged demonstrations across the bridge in April 2024 in response to the ongoing Israel-Hamas War. The protests aimed to raise awareness and show solidarity with Gaza during a period of conflict, with some protestors chaining themselves to vehicles to impede traffic flow. Major highways and bridges were temporarily blocked, resulting in arrests by law enforcement.

Suicides

Main article: Suicides at the Golden Gate Bridge As a suicide prevention initiative, signs on the Golden Gate Bridge promote special telephones that connect to crisis hotlines, as well as 24/7 crisis text lines.

The Golden Gate Bridge is the most used suicide site in the world. The deck is about 245 feet (75 m) above the water. After a fall of four seconds, jumpers hit the water at around 75 mph (120 km/h; 30 m/s). Most die from impact trauma. About 5% survive the initial impact but generally drown or die of hypothermia in the cold water.

Suicide nets on the Pacific side of the Golden Gate Bridge in December 2022

After years of debate and an estimated more than 1,500 deaths, suicide barriers, consisting of a stainless steel net extending 20 feet (6.1 m) from the bridge and supported by structural steel 20 feet under the walkway, began to be installed in April 2017. Construction was first estimated to take approximately four years at a cost of over $200 million. Installation of the nets was completed in January 2024. The metal nets are visible from the pedestrian walkways and are expected to be painful to land on.

Wind

The Golden Gate Bridge was designed to safely withstand winds of up to 68 mph (109 km/h). Until 2008, the bridge was closed because of weather conditions only three times: on December 1, 1951, because of gusts of 69 mph (111 km/h); on December 23, 1982, because of winds of 70 mph (113 km/h); and on December 3, 1983, because of wind gusts of 75 mph (121 km/h). An anemometer placed midway between the two towers on the west side of the bridge has been used to measure wind speeds. Another anemometer was placed on one of the towers.

As part of the retrofitting of the bridge and installation of the suicide barrier, starting in 2019 the railings on the west side of the pedestrian walkway were replaced with thinner, more flexible slats in order to improve the bridge's aerodynamic tolerance of high wind to 100 mph (161 km/h). Starting in June 2020, reports were received of a loud hum, heard across San Francisco and Marin County, produced by the new railing slats when a strong west wind was blowing. The sound had been predicted from wind tunnel tests, but not included in the environmental impact report; ways of ameliorating it are being considered. An independent engineering analysis of a 2020 sound recording of the tones concludes that the singing noise comprises a variety of Aeolian tones (the sound produced by air flowing past a sharp edge), arising in this case from the ambient wind blowing across metal slats of the newly installed sidewalk railings. The tones observed were frequencies of 354, 398, 439 and 481 Hz, corresponding to the musical notes F4, G4, A4, and B4; these notes form an F Lydian Tetrachord.

Seismic vulnerability and improvements

South approach sub-structure with seismic isolators (short black cylinders) added as part of the Seismic Retrofit Construction Project

Modern knowledge of the effect of earthquakes on structures led to a program to retrofit the Golden Gate to better resist seismic events. The proximity of the bridge to the San Andreas Fault places it at risk for a significant earthquake. Once thought to have been able to withstand any magnitude of foreseeable earthquake, the bridge was actually vulnerable to complete structural failure (i.e., collapse) triggered by the failure of supports on the 320-foot (98 m) arch over Fort Point. A $392 million program was initiated to improve the structure's ability to withstand such an event with only minimal (repairable) damage. A custom-built electro-hydraulic synchronous lift system for construction of temporary support towers and a series of intricate lifts, transferring the loads from the existing bridge onto the temporary supports, were completed with engineers from Balfour Beatty and Enerpac, without disrupting day-to-day commuter traffic. Although the retrofit was initially planned to be completed in 2012, as of May 2017 it was expected to take several more years.

The former elevated approach to the Golden Gate Bridge through the San Francisco Presidio, known as Doyle Drive, dated to 1933 and was named after Frank P. Doyle. Doyle, the president of the Exchange Bank in Santa Rosa and son of the bank's founder, was the man who, more than any other person, made it possible to build the Golden Gate Bridge. The highway carried about 91,000 vehicles each weekday between downtown San Francisco and the North Bay and points north. The road was deemed "vulnerable to earthquake damage", had a problematic 4-lane design, and lacked shoulders; a San Francisco County Transportation Authority study recommended that it be replaced. Construction on the $1 billion replacement, temporarily known as the Presidio Parkway, began in December 2009. The elevated Doyle Drive was demolished on the weekend of April 27–30, 2012, and traffic used a part of the partially completed Presidio Parkway, until it was switched onto the finished Presidio Parkway on the weekend of July 9–12, 2015. As of May 2012, an official at Caltrans said there is no plan to permanently rename the portion known as Doyle Drive.

Gallery


A comparison of the side elevation of the Golden Gate Bridge to the side elevations of some of the most notable bridges around the world on the same scale (click for interactive version) Panorama of San Francisco with two bridges (Western section of Bay Bridge in the left background), Coit Tower (in background to the left of north tower), and Fort Mason (on the San Francisco waterfront in the background behind the north tower) from Marin Panorama of the Golden Gate Bridge at night, with San Francisco in the background

See also

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