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U.S. Highways of the Louisiana Highway System
Highway markers from different years: 1928 (left), 1948 (center), 1970–present (right)
System information
Maintained by La DOTD
Length	2,598.636 mi (4,182.099 km)
Formed	November 11, 1926 (1926-11-11) (designated); February 1928 (signed)
Highway names
US Highways	U.S. Highway X (US X)
Special routes:	U.S. Highway X Business (US X Bus.); U.S. Highway X Bypass (US X Byp.); U.S. Highway X Truck (US X Truck)
System links
Louisiana State Highway System Interstate US State Scenic

The U.S. Highway System in Louisiana consists of 2,490.851 miles (4,008.636 km) of mainline highway routes and 107.785 miles (173.463 km) of special routes (both figures including concurrencies) that are constructed and maintained by the Louisiana Department of Transportation and Development (La DOTD).

Mainline routes

Number	Length (mi)	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
US 11	31.153	50.136	US 90 in New Orleans	Mississippi state line north of Pearl River	01939-01-011939	current
US 51	68.925	110.924	US 61 in LaPlace	Mississippi state line north of Kentwood	01926-01-011926	current
US 61	121.644	195.767	US 90 in New Orleans	Mississippi state line north of St. Francisville	01926-01-011926	current
US 63	35.351	56.892	I-20/US 167/LA 146 in Ruston	Arkansas state line at Junction City	01999-01-011999	current	Entire route co-signed with US 167; only U.S. highway in Louisiana with same number as a current state route (LA 63)
US 65	100.77	162.17	US 425/LA 15 in Clayton	Arkansas state line north of Lake Providence	01926-01-011926	current
US 71	231.099	371.918	US 190 west of Krotz Springs	Arkansas state line at Ida	01926-01-011926	current
US 79	88.246	142.018	Texas state line southwest of Greenwood	Arkansas state line north of Haynesville	01935-01-011935	current
US 80	199.850	321.627	Texas state line west of Greenwood	Mississippi state line at Vicksburg, MS	01926-01-011926	current
US 84	182.851	294.270	Texas state line at Logansport	Mississippi state line at Natchez, MS	01935-01-011935	current
US 90	297.6	478.9	Texas state line at Orange, TX	Mississippi state line at Pearlington, MS	01926-01-011926	current	Lafayette–New Orleans segment projected to become part of I-49
US 165	228.319	367.444	US 90 east of Lake Charles	Arkansas state line north of Bonita	01926-01-011926	current
US 167	241.046	387.926	LA 14 in Abbeville	Arkansas state line at Junction City	01926-01-011926	current
US 171	177.441	285.564	US 90/LA 14 in Lake Charles	US 79/US 80/LA 3094 in Shreveport	01926-01-011926	current	Only U.S. Highway completely within Louisiana; intersects US 71 via LA 3094 in Shreveport
US 190	280.8	451.9	Texas state line west of Merryville	US 90 in White Kitchen, near Slidell	01926-01-011926	current
US 371	84.140	135.410	I-49/LA 177 southwest of Coushatta	Arkansas state line at Springhill	01994-01-011994	current
US 425	120.969	194.681	Mississippi state line at Natchez, MS	Arkansas state line north of Bastrop	01989-01-011989	current

Current special routes

Number	Length (mi)	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
US 51 Bus.	8.837	14.222	South of Ponchatoula	Hammond	01960-01-011960	current	La DOTD designation: US 51-X
US 61 Bus.	11.098	17.860	Baton Rouge	Baton Rouge	01960-01-011960	current	La DOTD designation: US 61-X; entire route duplicated by US 190 Bus.
US 71 Byp.	6.530	10.509	Alexandria	Alexandria	01994-01-011994	current	Entire route follows I-49
US 79 Byp.	5.223	8.406	South of Homer	Homer	02011-01-012011	current	La DOTD designation: US 79-B
US 79 Truck	4.417	7.108	Minden	Minden	—	—	Route follows combination of local roads, US 80, and LA 531
US 80 Truck	0.284	0.457	Arcadia	Arcadia	—	—	Route follows LA 798-1 and LA 151
US 80 Truck	0.158	0.254	Gibsland	Gibsland	—	—	Entire route follows LA 799
US 80 Truck	0.470	0.756	Minden	Minden	—	—	Entire route follows US 79 Truck
US 84 Bus.	0.733	1.180	Mansfield	Mansfield	02010-01-012010	current	La DOTD designation: US 84-B
US 90 Bus.	2.633	4.237	Lafayette	Lafayette	01965-01-011965	current	La DOTD designation: US 90-Y
US 90 Bus.	3.207	5.161	Lake Charles	Lake Charles	01963-01-011963	current	La DOTD designation: US 90-X
US 90 Bus.	8.158	13.129	Morgan City	East of Amelia	01999-01-011999	current	La DOTD designation: US 90-W
US 90 Bus.	14.580	23.464	West of Westwego	New Orleans	01960-01-011960	current	La DOTD designation: US 90-Z
US 165 Bus.	6.073	9.774	Alexandria	Pineville	01963-01-011963	current	La DOTD designation: US 165-X
US 165 Bus.	9.688	15.591	South of Richwood	Monroe	01970-01-011970	current	La DOTD designation: US 165-Y
US 167 Bus.	4.306	6.930	Alexandria	Alexandria	01994-01-011994	current	La DOTD designation: US 167-X
US 171 Bus.	3.113	5.010	East of Zwolle	North of Zwolle	02008-01-012008	current	La DOTD designation: US 171-X
US 190 Bus.	10.982	17.674	Baton Rouge	Baton Rouge	01960-01-011960	current	La DOTD designation: US 61-X; entire route duplicates US 61 Bus.
US 190 Bus.	3.306	5.320	Covington	Covington	01969-01-011969	current	La DOTD designation: US 190-X
US 190 Bus.	3.937	6.336	Slidell	East of Slidell	01971-01-011971	current	La DOTD designation: US 190-Y; official mileage does not reflect entire signed route
US 190 Spur	0.052	0.084	Kinder	Kinder	—	—	La DOTD designation: US 190-S; un-signed route

Former special routes

Number	Length (mi)	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
US 61 Bus.	2.46	3.96	St. Francisville	St. Francisville	01960-01-011960	02012-01-012012	Route followed LA 3057 and LA 10 (now LA 1263)
US 61 Byp.	6.6	10.6	Baton Rouge	Baton Rouge	01947-01-011947	01963-01-011963	Entire route duplicated by US 65 Byp. until 1951 and US 190 Byp. after 1954; replaced by mainline US 61
US 65 Byp.	10.4	16.7	Nesser	Baton Rouge	01947-01-011947	01951-01-011951	Entire route duplicated US 61 Byp.; deleted when US 65 southern terminus moved to Natchez, MS
US 71 Bus.	4.5	7.2	Alexandria	Alexandria	01947-01-011947	01951-01-011951	Replaced by mainline US 71
US 71 Bus.	4.6	7.4	Alexandria	Alexandria	01963-01-011963	01981-01-011981	Replaced by re-routed US 167 and existing state highways
US 71 Byp.	4.8	7.7	Alexandria	Alexandria	01951-01-011951	01963-01-011963	Entire route duplicated by US 167 Byp.; replaced by mainline US 71
US 80 Alt.	3.7	6.0	East of Bossier City	Shreveport	01937-01-011937	01939-01-011939	Alternate Red River crossing
US 90 Alt.	3	4.8	New Orleans	New Orleans	01935-01-011935	01936-01-011936
US 90 Bus.	2.7	4.3	Lafayette	Lafayette	01947-01-011947	01951-01-011951	Replaced by mainline US 90
US 90 Byp.	2.1	3.4	Lafayette	Lafayette	01951-01-011951	01956-01-011956	Replaced by mainline US 90
US 165 Byp.	8.8	14.2	Alexandria	North of Pineville	01951-01-011951	01963-01-011963	Replaced by mainline US 165
US 165 Byp.	7.9	12.7	Rilla	Monroe	01965-01-011965	01970-01-011970	Replaced by mainline US 165
US 167 Byp.	1.3	2.1	Lafayette	Lafayette	01955-01-011955	01956-01-011956	Entire route followed US 90 Byp.; replaced by mainline US 167
US 167 Byp.	4.8	7.7	Alexandria	Alexandria	01951-01-011951	01963-01-011963	Entire route duplicated US 71 Byp.; replaced by mainline US 167
US 190 Byp.	6.6	10.6	Baton Rouge	Baton Rouge	01947-01-011947	01963-01-011963	Entire route followed US 61 Byp. (and US 65 Byp. until 1951); replaced by mainline US 190
US 190 Spur	0.74	1.19	Hammond	Hammond	—	01991-01-011991	Replaced by LA 3260

See also

• United States portal
• U.S. Roads portal

References

1. ^ United States Numbered Highways, Selected by American Association of State Highway Officials, Approved by United States Department of Agriculture. American Association of State Highway Officials. 1927.
2. "Standard U.S. Road Markers Being Erected". Alexandria Daily Town Talk. Alexandria, LA. February 14, 1928. p. 9.
3. ^ Louisiana Department of Transportation and Development, Highway Inventory Unit (2018). "LRS Conversion Tool". Louisiana Department of Transportation and Development. Retrieved January 4, 2019.
4. Weingroff, Richard F. (April 7, 2011). "U.S. 11 - Rouses Point, New York, to New Orleans, Louisiana". Highway History. Federal Highway Administration. Retrieved April 25, 2013.
5. ^ Special Committee on U.S. Route Numbering (October 1, 1999). "Report of the Special Committee on U.S. Route Numbering to the Standing Committee on Highways" (PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. Archived from the original (PDF) on October 16, 2017. Retrieved November 5, 2015.
6. ^ Louisiana Highway Commission; Hal M. Bourg (July 1, 1935). Official Road Map of Louisiana (Map). Scale not given. Baton Rouge: Louisiana Highway Commission.
7. Special Committee on U.S. Route Numbering (April 10, 1994). "Report of the Special Committee on U.S. Route Numbering to the Standing Committee on Highways" (PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. Archived from the original (PDF) on October 16, 2017. Retrieved November 5, 2015.
8. Special Committee on U.S. Route Numbering (October 7, 1989). "Report of the Special Committee on U.S. Route Numbering to the Executive Committee" (PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. Archived from the original (PDF) on October 16, 2017. Retrieved November 5, 2015.
9. ^ Louisiana Department of Highways (December 1960). Louisiana (Map). Scale not given. Baton Rouge: Louisiana Department of Highways.
10. ^ Special Committee on U.S. Route Numbering (November 12, 1994). "Report of the Special Committee on U.S. Route Numbering to the Standing Committee on Highways" (PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. Archived from the original (PDF) on October 16, 2017. Retrieved November 5, 2015.
11. Special Committee on U.S. Route Numbering (October 15, 2011). "Report to the Standing Committee on Highways" (PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. Archived from the original (PDF) on October 16, 2017. Retrieved November 5, 2015.
12. Special Committee on U.S. Route Numbering (October 29, 2010). "Report to the Standing Committee on Highways" (PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. Archived from the original (PDF) on October 16, 2017. Retrieved November 5, 2015.
13. ^ Louisiana Department of Highways (1966). Louisiana (Map). Scale not given. Baton Rouge: Louisiana Department of Highways.
14. ^ Louisiana Department of Highways (June 1, 1963). Louisiana (Map). Scale not given. Baton Rouge: Louisiana Department of Highways.
15. "West Bank Link Opens Monday". The Times-Picayune. New Orleans. September 11, 1960. p. 6. ISSN 1055-3053.
16. Barry, Fred (October 9, 1960). "West Bank Expressway Removes Bottlenecks". The Times-Picayune. New Orleans. p. 6. ISSN 1055-3053.
17. ^ U.S. Route Numbering Subcommittee (June 20, 1970). "U.S. Route Numbering Subcommittee Agenda Showing Action Taken by the Executive Committee" (PDF) (Report). Washington, DC: American Association of State Highway Officials. Retrieved November 5, 2015 – via Wikimedia Commons.
18. Special Committee on U.S. Route Numbering (May 4, 2008). "Special Committee on US Route Numbering Decisions" (Report). Washington, DC: American Association of State Highway and Transportation Officials. Archived from the original (MHT) on October 16, 2017. Retrieved November 5, 2015.
19. U.S. Route Numbering Subcommittee (June 24, 1969). "U.S. Route Numbering Subcommittee Agenda Showing Action Taken by the Executive Committee" (Report). Washington, DC: American Association of State Highway Officials. Retrieved November 5, 2015 – via Wikisource.
20. U.S. Route Numbering Subcommittee (June 21, 1971). "U.S. Route Numbering Subcommittee Agenda Showing Action Taken by the Executive Committee" (PDF) (Report). Washington, DC: American Association of State Highway Officials. Retrieved November 5, 2015 – via Wikimedia Commons.
21. ^ Louisiana Department of Highways (1947). Louisiana Highways (Map). Scale not given. Baton Rouge: Louisiana Department of Highways.
22. ^ Louisiana Department of Highways (September 1, 1951). Louisiana Highways (Map). Scale not given. Baton Rouge: Louisiana Department of Highways.
23. Special Committee on U.S. Route Numbering (October 3, 1981). "Route Numbering Committee Agenda" (Report). Washington, DC: American Association of State Highway and Transportation Officials. Retrieved November 5, 2015 – via Wikisource.
24. Gallup Map and Supply (1937). Louisiana Info-Map (Map). Gulf Oil.
25. H.M. Gousha (1939). Road Map of Louisiana (Map). Scale not given. Baton Rouge: Tourist Bureau, Louisiana Department of Commerce and Industry.
26. ^ Louisiana Department of Highways (July 1, 1956). Louisiana Highways (Map). Scale not given. Baton Rouge: Louisiana Department of Highways.
27. Louisiana Department of Highways (July 1, 1955). Louisiana Highways: Interim Road Map (Map). Scale not given. Baton Rouge: Louisiana Department of Highways.

External links

• Maps / GIS Data Homepage, Louisiana Department of Transportation and Development

v t e Louisiana Highway System
Highway systems	Interstate U.S. State 1–99 100–149 150–199 300–349 350–399 400–449 450–499 500–549 550–599 600–649 650–699 700–749 750–799 800–849 850–899 900–949 950–999 1000–1049 1050–1099 1100–1149 1150–1199 1200–1299 3000–3049 3050–3099 3100–3149 3150–3199 3200–3249 3250–3299 Pre-1955 state highways 1–50 51–100 Parish Scenic
Highway agency	Louisiana Department of Transportation and Development (La DOTD)

• U.S. Highways in Louisiana
• Lists of roads in Louisiana