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Highway 40
Highway 40 highlighted in red
Route information
Maintained by the Ministry of Transportation of Ontario
Length	91.4 km (56.8 mi)
Existed	March 28, 1934–present
Major junctions
South end	Highway 401 in Chatham-Kent
North end	Highway 402 in Sarnia
Location
Country	Canada
Province	Ontario
Highway system
Ontario provincial highways Current Former 400-series
← Highway 37 → Highway 41
Former provincial highways ←  Highway 39

King's Highway 40, commonly referred to as Highway 40, is a provincially maintained highway in the southwestern portion of the Canadian province of Ontario. The 91.4-kilometre (56.8 mi) route links Chatham and Sarnia via Wallaceburg, following close to the St. Clair River. The southern terminus is at Highway 401 south of Chatham, while the northern terminus is at Highway 402 in Sarnia. The portion of Highway 40 between Highway 401 and north of Wallaceburg is within the municipality of Chatham-Kent, while the portion north of there is within Lambton County.

Highway 40 was built as a depression-relief project in 1934. The original routing followed what is now the St. Clair Parkway, but was rerouted to create that scenic road in the mid-1970s. The Sarnia Bypass was opened in 1963 as Highway 40A and renumbered as Highway 40 by 1966; the original route through Sarnia became Highway 40B until it was decommissioned during the early-1990s. The route was extended to Highway 3 in Blenheim during the early 1970s; however this section was decommissioned during the Ontario highway transfers in 1998.

Route description

Highway 40 begins at an interchange with Highway 401 (Exit 90) southeast of the urban centre of Chatham, within the municipality of Chatham-Kent. Southwest of the interchange is C. M. Wilson Conservation Area, a 30-hectare (74-acre) campground named for the former Chair of Directors of the Lower Thames Valley Conservation Authority, Clarence Michael Wilson. The highway proceeds northwest as Communication Road, passing between farmland on the outskirts of Chatham. It crosses a Canadian National Railway (CN) mainline followed by the Thames River, then turns southwest onto Grand Avenue East and crosses a Canadian Pacific (CP) railway line. The highway progresses from the outskirts of Chatham to downtown before turning onto St. Clair Street and travelling northwest. It encounters the Nortown Centre mall as it passes through the suburbs and eventually leaves the city.

The African-Canadian Heritage Tour (ACHT) follows a portion of Highway 40 from Highway 401 to Chatham-Kent Road 29 (Countryview Line) at Oungah, where it turns east towards Dresden. The ACHT was begun in 1991, and by 1997 was the most successful heritage tour in North America. However, under a new tourism signage policy, markers signing the ACHT were removed from Highway 40 in 1998.

Oungah is the only community between Chatham and Wallaceburg, where the highway divides a large swath of farmland established in the fertile soils of the region. Immediately southeast of Wallaceburg, the highway turns to the north and becomes known as Murray Street. As it enters the town, it turns onto McNaughton Avenue and crosses a CSX railway line then the Sydenham River. The route turns west onto Dufferin Avenue and proceeds out of the town, crossing the CSX railway a second time. After crossing an irrigation canal, Highway 40 turns north onto Arnold Road and crosses the CSX railway a third and final time before exiting Chatham-Kent.

The route enters Lambton County in the municipality of St. Clair, passing through more farmland. Seven kilometres (4.3 mi) north of the county line, the highway crosses the W. Darcy McKeough Floodway, a channel constructed in 1984 to protect Wallaceburg from flooding. Highway 40 continues north, parallel to and several kilometres east of the St. Clair River. At Bickford, it swerves slightly to the east while passing between the CF Industries nitrogen fertilizer plant to the west and Bickford Oak Woods Provincial Conservation Reserve to the east. As the highway approaches the south end of Sarnia, it widens into a divided four-lane expressway and passes through Chemical Valley, the location of several industrial plants. The route enters Aamjiwnaang First Nation at La Salle Line where the surroundings abruptly switch to forest from a mix of industry and farmland.

At the intersection with Churchill Line, Highway 40 enters the Sarnia city limits and turns east onto the Sarnia Bypass, a four lane divided expressway. Approximately three kilometres (1.9 mi) east of the intersection, the highway narrows back to a two lane road. Soon thereafter, it gently curves to the north, intersecting Plank Road and becoming Modeland Road. It passes along the western edge of the Sarnia Photovoltaic Power Plant, the largest photovoltaic (solar) power plant in the world in 2010. The route passes above a CN and VIA rail line as it travels along the eastern rural–urban fringe of the city. After a signalized intersection with Wellington Street, Highway 40 widens to a divided four lane expressway once more just prior to a Parclo A2 interchange with London Line (former Highway 7), then ends at a Parclo B4 interchange with Highway 402 (Exit 6). Modeland Road narrows back to a two lane road and continues north as Lambton County Road 27.

History

Highway 40 was established at the height of the Great Depression, during the spring of 1934. The subsequent improvement of the roadway employed several dozen men eight hours per day, six days per week at minimum wage as a depression-relief project. It was created by the assumption of the St. Clair River Road, as well as several lengths of concession road created as a result of statute labour by adjacent settlers as part of the requirements to secure a land deed. On March 28, the road connecting Chatham with Wallaceburg was assumed by the Department of Highways (DHO) and designated King's Highway 40. Just over a month later, on May 2, the DHO assumed the route between Wallaceburg and Sarnia known today as the St. Clair Parkway. The 80.6-kilometre (50.1 mi) route connected Highway 2 in Chatham with Highway 7 and Highway 22 in Sarnia. The designation came just weeks before the 1934 Ontario general election, which saw Lambton West incumbent Conservative Member of the Legislative Assembly Andrew Robinson McMillen replaced by Liberal William Guthrie. As such, it was seen as a fruitless last-ditch attempt to garner votes.

Sarnia Bypass

In the decade following World War II, automobile use in North America increased dramatically, inundating many highways on the approach to and within urbanized areas with heavy traffic. As a result, freeways and bypasses were constructed throughout the province, allowing drivers not destined for those locations avoid congestion. In 1957, the DHO announced that Highway 402 would be extended east of Sarnia to London, starting with the construction of an interchange at Modeland Road to replace the at-grade intersection, although Highway 402 would continue to default to Highway 7 for the near future as the rest of the extension was still being planned. This interchange would serve as the terminus for a new bypass of Sarnia, as in 1980 a second overpass was built at this interchange during the twinning of Highway 40 to Wellington Street.

On May 1, 1963, portions of Modeland Road and Churchill Line were taken over by the DHO and numbered as Highway 40A. These roads were reconstructed over the following year to provincial standards. On October 25, 1963, the Sarnia Bypass was opened to traffic. Further construction was carried out until late 1965 to grade the route for future widening and build an overpass of the CN Railway south of Confederation Line, after which the bypass was renumbered as the northern end of Highway 40; the former route on the west side of Sarnia, via Brock Street, Vidal Street and Front Street, was subsequently renumbered Highway 40B.

In 1972, as part of the eventual extension to Highway 401 in London, Highway 402 east of the Murphy Road overpass was re-aligned so it no longer defaults to Highway 7 but instead bypasses the existing interchange with Highway 40 constructed in 1963-64. In turn, Highway 7 (London Line) was redirected to connect with Exmouth Street to make for a continuous arterial road, which led to the two-lane residential portion of Exmouth Street being bypassed. Opened in 2002, Quinn Street follows the former alignment of Highway 402. For the realigned Highway 402, a new interchange was constructed with Highway 40 just north of the original interchange.

St. Clair Parkway

During the late-1950s, the St. Lawrence Seaway project created a navigable lock system between the Atlantic Ocean and Lake Superior, while simultaneously reclaiming properties along the shoreline to create a continuous parkway. Seeing the potential tourist draw, several groups and organizations, including the district Chamber of Commerce, convened at the second annual conference of the Southwestern Ontario Chambers of Commerce and Boards of Trade in February 1960. Several resolutions were passed, calling for the DHO to create a new Highway 40 several kilometres inland from the St. Clair River and to have the old highway rebuilt as a scenic route. These resolutions were echoed by Lambton County Council and the 21 municipalities in the county.

Plans for the parkway were crafted over the next several years before being presented to minister of highways Charles MacNaughton in the spring of 1965. Subsequently, the St. Clair Parkway Commission was formed in 1966. Around this time, several large chemical refineries, including Union Carbide and S.O.A.P. were built south of Sarnia along the future highway corridor, an area known since the 1940s as Chemical Valley. Following several years of negotiations with the Aamjiwnaang First Nation (then the Chippewas of Sarnia), construction of the new inland route of Highway 40 began in July 1972. Working south from Sarnia, the first contract reached as far south as Highway 80 (Courtright Line), a distance of 13.4 km (8.3 mi). A second contract, awarded in 1974, extended construction south an additional 11.0 km (6.8 mi) to Lambton County Road 2 (Bentpath Line) near Sombra. The third and final contract was awarded in late 1975 to complete the remaining 13.2 km (8.2 mi) south of County Road 2.

The new Sarnia–Wallaceburg highway was opened to traffic as each contract was completed. The section from Sarnia to Highway 80 was opened in August 1975, and the section from Highway 80 to Sombra by mid-1977. The entire C$12.6 million ($58.9 million in 2023 dollars) project was opened ceremoniously by Highway Minister James Snow on November 25, 1977; he was late to the ceremony due to a snowstorm. The old alignment was transferred to the St. Clair Parkway Commission between Sarnia and Sombra in 1979, and from Sombra to Dufferin Avenue (opposite Walpole Island) by 1982. The remaining 3.0 km (1.9 mi) along Dufferin Avenue to the new Highway 40 was decommissioned between 1984 and 1986. Lambton County designated its portion of the former highway as County Road 33.

Kent County

Within Wallaceburg, Highway 40 originally followed Murray Street, King Street, McDougal Street across the Sydenham River and James Street. When the Lord Selkirk Bridge was opened November 23, 1950, the highway was rerouted along McNaughton Avenue and across the new bridge. In 1975, the alignment was briefly changed to Murray Street and the one-way pairing of Wellington and James Streets while the Lord Selkirk Bridge was rehabilitated and McNaughton Avenue widened to four lanes.

Within Chatham, Highway 40 originally followed St. Clair Street and Thames Street to intersect Highway 2 at Fifth Street adjacent to the Thames River. By 1940, it had been rerouted across the Third Street bridge and along Raleigh Street to end at Richmond Street. Despite the opening of Highway 401 south of Chatham on October 25, 1963, Highway 40 was not extended south of Chatham until the end of the decade.

In spring of 1969, the DHO assumed Communication Road south of Highway 401 to Highway 3 in Blenheim, in exchange for Highway 98, which became Kent County Road 8. Communication Road was numbered Highway 40 in July 1970, although there was no signed connection between Highway 401 and Chatham. The 1971 Ontario Road Map indicates that this gap had been closed, with Highway 40 following Richmond Street, Queen Street, and Park Avenue East to Communication Road. Along with the completion of the St. Clair Parkway, the route was now 103.1 km (64.1 mi) long.

Downloads

As part of a series of budget cuts initiated by premier Mike Harris under his Common Sense Revolution platform in 1995, numerous highways deemed to no longer be of significance to the provincial network were decommissioned and responsibility for the routes transferred to a lower level of government, a process referred to as downloading. Highway 3 was downloaded between Leamington and west of St. Thomas, rendering Highway 40 south of Highway 401 redundant. Accordingly, Highway 40 was transferred to Kent County on January 1, 1998.

Major intersections

The following table lists the major junctions along Highway 40, as noted by the Ministry of Transportation of Ontario. 

Division	Location	km	mi	Destinations	Notes
Chatham-Kent	Blenheim	−9.7	−6.0	Municipal Road 3 / Municipal Road 11 (Marlborough Street / Chatham Street)	Former Highway 40 southern terminus; formerly Highway 3; former Highway 40 follows present-day Municipal Road 11 north
		−9.4	−5.8	Municipal Road 19 (Talbot Street)
	Kent Centre	0.0	0.0	Highway 401 – Windsor, London  Highway 40 begins  Chatham-Kent Municipal Road 11 ends	Highway 40 southern terminus; Highway 401 exit 90
		1.5	0.93	Municipal Road 14 (Creek Road / Pinehurst Line)
		5.3	3.3	Municipal Road 18 east (Fairview Line)
	Chatham	6.3	3.9	Municipal Road 18 west (Park Avenue)
		6.4	4.0	Municipal Road 39 east (River Line) / Colborne Street
		7.4	4.6	Municipal Road 30 north (Prince Albert Road)  Municipal Road 2 east (Longwoods Road)	Formerly Highway 2 east; former southern end of Highway 2 concurrency
		12.1	7.5	Municipal Road 2 west (Grand Avenue)	Formerly Highway 2 west; former northern end of Highway 2 concurrency
		19.1	11.9	Municipal Road 35 (St. Andrews Line / Eberts Line)
	Oungah	23.4	14.5	Municipal Road 29 (Countryview Line) – Dresden
		30.5	19.0	Municipal Road 42 (Electric Line / Oldfield Line)
	Wallaceburg	38.0	23.6	Municipal Road 15 east (Baseline)
		39.6	24.6	Municipal Road 78 east – Dresden	Formerly Highway 78 east
		42.2	26.2	Municipal Road 33 (Dufferin Avenue)	To St. Clair Parkway
Lambton	St. Clair	49.0	30.4	County Road 1 west (Lambton Line) – Port Lambton
		53.1	33.0	County Road 28 west (Holt Line)
		55.8	34.7	County Road 2 (Bentpath Line)
		66.6	41.4	County Road 80 (Courtright Line) – Courtright, Brigden	Formerly Highway 80
		74.6	46.4	County Road 4 (Petrolia Line) – Corunna, Petrolia
	Sarnia	77.3	48.0	County Road 35 west (La Salle Street)	Sarnia city limits
		80.1	49.8	Churchill Line	Formerly Highway 40B north; Highway 40 follows Churchill Line east
		82.8	51.4	County Road 29 north (Indian Road)
		85.2	52.9	County Road 20 (Plank Road)	Churchill Line becomes Modeland Road
		87.9	54.6	County Road 25 (Confederation Street)
		90.7	56.4	County Road 22 (London Line) – London	Interchange; formerly Highway 7
		91.4	56.8	Highway 402 – London, Bridge to U.S.A.  County Road 27 north (Modeland Road)	Highway 40 northern terminus; Highway 402 exit 6
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Closed/former       Route transition

Suffixed routes

Highway 40A

Highway 40A
Location	Churchill Road, Modeland Road
Length	8.0 km (5.0 mi)
Existed	May 1, 1963–late 1965

See #Sarnia Bypass

Highway 40A was the temporary designation for the Sarnia Bypass between its assumption by the DHO on May 1, 1963, and its completion in late 1965. The DHO maintained the 8.0 km (5.0 mi) portion from the Sarnia city limits at Indian Road to Highway 402. When the bypass was completed, it was renumbered as Highway 40.

Highway 40B

Highway 40B
Location	Vidal Street, Christina Street
Length	8.0 km (5.0 mi)
Existed	Late 1965–1993

Highway 40B was the designation of the former route of Highway 40 through downtown Sarnia following the opening of the Sarnia Bypass in late 1965. The route followed Vidal Street from Churchill Road northeast, crossing the entrance to the St. Clair Tunnel just south of Campbell Street. It continued along Vidal to Wellington Street, where it turned west then north along Front Street to Highway 402. The following year, Highway 40B was rerouted from Vidal Street along Confederation Street west to Christina Street and north to Wellington Street. On August 24, 1979, the Donahue Bridge was opened over the St. Clair Tunnel, and Vidal Street split into a one-way pair with Brock Street to the north of the bridge. Highway 40B was rerouted along the one-way pairing to London Road then west to Front Street by 1980. It remained this way until some point between 1992 and 1996, when it was decommissioned as a provincial highway.

Highway 40C

Highway 40C
Location	Cromwell Street, Front Street
Length	2.2 km (1.4 mi)
Existed	1963–1965

Highway 40C was signed along Cromwell Street and Front Street in downtown Sarnia briefly during the mid-1960s. It was extended from Exmouth Street to Highway 402 on January 6, 1964. The 1965 DHO Annual Report indicates that the route began at Vidal Street and ended at Errol Road (which intersects Christina Street but not Front Street), while the 1965 Ontario Road Map indicates that the portion of Front Street north of Exmouth Street was part of Highway 40C. The route does not appear on any other official road maps.

References

1. ^ "Appendix No. 4 – Schedule of Assumptions and Reversions of Sections of the King's Highway System for the Year 1934". Annual Report (Report). Department of Highways. March 31, 1935. pp. 119–120. Retrieved February 3, 2021 – via Internet Archive.
2. ^ Ministry of Transportation of Ontario (2016). "Annual Average Daily Traffic (AADT) counts". Retrieved January 1, 2021.
3. ^ Ontario Back Road Atlas (Map). Cartography by MapArt. Peter Heiler. 2010. pp. 6, 12. §§ T7–B10. ISBN 978-1-55198-226-7.
4. "C. M. Wilson Conservation Area". Lower Thames Valley Conservation Authority. Archived from the original on April 19, 2014. Retrieved January 15, 2014.
5. ^ "Highway 40 – Length and Route" (Map). Google Maps. Retrieved December 30, 2020.
6. Ontario Road Map (Map). Cartography by Surveys and Mapping Section. Ministry of Transportation. 1997. § M3.
7. Harding-Davis, Elise (August 2, 1997). "Emancipation Celebrates Heritage". The Windsor Star. p. A9.
8. Bradt, Sandra (July 30, 1998). "Sign for Historic Site Affected by Government". The Windsor Star. p. A7.
9. Mann, Alan; Mann, Frank (1984). Settlement on the Sydenham: A Story of Wallaceburg (PDF). Standard Press. p. 10. Retrieved December 30, 2020.
10. Phair, John (June 21, 2011). "McKeough Floodway controversial but has done its job, SCRCA says". Today's Farmer. Canoe Sun Media. Archived from the original on June 5, 2015. Retrieved January 15, 2014.
11. "Plants: Courtright, Ontario". CF Industries Holdings. Archived from the original on February 27, 2014. Retrieved January 15, 2014.
12. Morden, Paul (July 10, 2013). "New frack tower part of $250-million upgrading for Corunna plant". The Sarnia ObservEr. Canoe Sun Media. Retrieved January 15, 2014.
13. The Sarnia-Lambton Petrochemical & Refining Complex (PDF) (Report). Sarnia-Lambton Economic Partnership. 2018. Retrieved February 24, 2021.
14. CBC News (October 4, 2010). "Enbridge completes Sarnia solar farm". Canadian Broadcasting Corporation. Retrieved October 5, 2010.
15. "Report of Chief Engineer". Annual Report (Report). Department of Highways. March 31, 1935. p. 96. Retrieved February 3, 2021 – via Internet Archive.
16. Deziel, Paul (November 10, 1934). "Historic Shores of River St. Clair". The Border Cities Star. p. 1, Section Three. Retrieved February 27, 2021.
17. Sarnia Bureau (May 14, 1934). "William Guthrie Named by West Lambton Liberals". The Border Cities Star. Vol. 32, no. 64. p. 15. Retrieved March 2, 2021 – via Newspapers.com.
18. "Sarnia Link to 401 Project". Windsor Daily Star. September 12, 1957. p. 20.
19. "Highway District Reports – District 1 – Chatham". Annual Report (Report). Department of Highways. March 31, 1963. p. 77.
20. ^ "Appendix No . 3C Schedule of Existing Roads Assumed". Annual Report (Report). Department of Highways. March 31, 1963. p. 271.
21. A.A.D.T. Traffic Volumes 1955–1969 And Traffic Collision Data 1967–1969. Ontario Department of Highways. 1970. pp. 80–81.
22. "Tender Date for Highway 40-A Job Unknown". Windsor Daily Star. November 24, 1964. p. 5.
23. ^ "Sarnia Ambulance Board Asks Subsidy Aid". Windsor Daily Star. December 18, 1965. p. 7.
24. ^ Annual Report (Report). Department of Highways. March 31, 1965. p. 15. Upon completion of the present work, the new highway will be signed as Highway 40, at which time the former route of Highway 40 through the business section of Sarnia will be signed as Highway 40B.
25. ^ Ontario Road Map (Map). Cartography by K.G. Gould. Ontario Department of Highways. 1966. § W17–Y18.
26. ^ Highway Construction Program: King's and Secondary Highways. Ministry of Transportation and Communications. 1972–1973. p. xi.
27. "Quinn Drive – Former Highway 402 alignment" (Map). Google Maps. Retrieved June 24, 2010.
28. "Chambers Support Parkway". The Windsor Star. March 1, 1960. p. 3. Retrieved August 21, 2012 – via Newspapers.com.
29. Bennie, Jim (December 8, 1960). "Area Chambers Support Back New Highway, Parkway". The Windsor Star. p. 1. Retrieved January 26, 2021.
30. Stewart, Bill (March 12, 1965). "MacNaughton to See St. Clair Parkway Plans". The Windsor Star. p. 3. Retrieved August 21, 2012.
31. Morden, Paul (January 19, 2009). "Parkway History Needs a Home". The Observer. Sarnia: Canoe Sun Media. Archived from the original on June 14, 2015. Retrieved June 12, 2015.
32. Staff (January 2, 1974). "Zoning May Affect SOAP". The Windsor Star. p. 7.
33. Ford, R. W. (1987). "History of the Chemical Industry in Lambton County". Sarnia Historical Society. Retrieved January 15, 2021.
34. McConnell, Brian (September 15, 1969). "Indian Objections May Stall Sarnia–London". The Windsor Star. p. 7.
35. Staff (May 1, 1970). "Vote Approves Indian Land Sale". The Windsor Star. p. 7.
36. Staff (April 25, 1973). "Work Expected to Resume on First Leg of Highway 40". The Windsor Star. p. 3.
37. Highway Construction Program. Ministry of Transportation and Communications. 1972–73. p. ix.
38. Highway Construction Program. Ministry of Transportation and Communications. 1975–76. p. x.
39. ^ Staff (November 8, 1977). "Official Opening Set for New Highway 40". The Windsor Star. p. 11.
40. Gervais, Marty (January 15, 1975). "Ontario Study May Determine Highway Route". The Windsor Star. p. 3.
41. ^ Sommers, Joanne (June 4, 1977). "Key Sarnia-Wallaceburg Link: New Highway May Pump New Life Into Business and Industry". The Windsor Star. p. 23.
42. 1688 to 1923: Geloso, Vincent, A Price Index for Canada, 1688 to 1850 (December 6, 2016). Afterwards, Canadian inflation numbers based on Statistics Canada tables 18-10-0005-01 (formerly CANSIM 326-0021) "Consumer Price Index, annual average, not seasonally adjusted". Statistics Canada. Retrieved April 17, 2021. and table 18-10-0004-13 "Consumer Price Index by product group, monthly, percentage change, not seasonally adjusted, Canada, provinces, Whitehorse, Yellowknife and Iqaluit". Statistics Canada. Retrieved 2024-05-08.
43. Staff (November 26, 1977). "Highway Opening Delayed By Snow". The Windsor Star. p. 7.
44. Ontario Road Map (Map). Cartography by Cartography Section. Ministry of Transportation and Communications. 1978–79. § L–M18.
45. Ontario Road Map (Map). Cartography by Cartography Section. Ministry of Transportation and Communications. 1980. § L–M18.
46. Ontario Road Map (Map). Cartography by Cartography Section. Ministry of Transportation and Communications. 1982–83. § L–M18.
47. Ontario Road Map (Map). Cartography by Cartography Section. Ministry of Transportation and Communications. 1984–85. § L–M18.
48. Ontario Road Map (Map). Cartography by Cartography Section. Ministry of Transportation and Communications. 1986–87. § L–M18.
49. Staff (November 16, 1950). "New Wallaceburg Bridge to Be Opened Nov. 23". The Windsor Star. p. 5. Retrieved January 16, 2022 – via Newspapers.com.
50. Staff (November 24, 1950). "New Bridge Dedicated By Pioneer". The Windsor Star. p. 5. Retrieved January 16, 2022 – via Newspapers.com.
51. Staff (October 30, 1975). "Streets Nearly Finished". The Windsor Star. p. 5. Retrieved January 16, 2022 – via Newspapers.com.
52. Ontario Road Map (Map). Cartography by D. Barclay. Ontario Department of Highways. 1937–38. Chatham inset.
53. Ontario Road Map (Map). Cartography by D. Barclay. Ontario Department of Highways. 1940–41. Chatham inset.
54. "District No. 1 – Chatham". Annual Report (Report). Department of Highways. March 31, 1964. p. 71.
55. Ontario Road Map (Map). Cartography by Photogrammetry Office. Ontario Department of Highways. 1969. Chatham inset.
56. Staff (June 13, 1969). "Communication Road Now Provincial". The Windsor Star. p. 5.
57. Staff (July 24, 1970). "Did You Know the County Now Has 2 Highway 40s?". The Windsor Star. p. 5.
58. Ontario Road Map (Map). Cartography by Photogrammetry Office. Ontario Department of Highways. 1971. Chatham inset.
59. ^ Transportation Capital Branch (1989). Provincial Highways Distance Table. Ministry of Transportation of Ontario. pp. 60–61. ISSN 0825-5350.
60. Highway Transfers List – "Who Does What" (Report). Ministry of Transportation of Ontario. June 20, 2001. p. 8.
61. ^ Ontario Road Map (Map). Cartography by C.P. Robins. Ontario Department of Highways. 1965. Sarnia inset.
62. Staff (August 12, 1979). "Final Bridge Paving to Start Wednesday". The Windsor Star. p. 7.
63. Ontario Road Map (Map). Cartography by Cartography Section. Ministry of Transportation and Communications. 1980–81. Sarnia inset.
64. Ontario Road Map (Map). Cartography by Cartographic Mapping Unit. Ministry of Transportation. 1992–93. Sarnia inset.
65. Ontario Road Map (Map). Cartography by Geomatics Office. Ministry of Transportation. 1997. Sarnia inset.
66. "Appendix No. 3A – Schedule of Designations and Redesignations of Sections of the King's Highway, Secondary Highway and Tertiary Road Systems for the Fiscal Year". Annual Report (Report). Department of Highways. March 31, 1964. p. 268.

External links

• Highway 40 – Length and Route
• Highway 40 Pictures and Information

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