List of U.S. Highways in Louisiana

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U.S. Highways of the Louisiana Highway System
U.S. Highway 90 markerU.S. Highway 165 markerU.S. Highway 61 marker
Highway markers from different years: 1928 (left), 1948 (center), 1971 (right)
System information
Formed: 1926 (designated);[1]
1928 (signed)
Length: 2,599.37 mi[2] (4,183.28 km)
Highway names
US Routes: U.S. Highway X (US X)
Bannered 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 Highway System

The U.S. Highway System in Louisiana consists of 2,495.31 miles (4,015.81 km) of mainline highway routes and 104.06 miles (167.47 km) of bannered routes (both figures including concurrencies) that are constructed and maintained by the Louisiana Department of Transportation and Development (La DOTD).[2]


Mainline routes[edit]

Number Length (mi)[2] Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
US 11 31.11 50.07 US 90 in New Orleans Mississippi state line northeast of Pearl River 1939 current
US 51 69.13 111.25 US 61 in LaPlace Mississippi state line northeast of Kentwood 1926 current
US 61 121.75 195.94 US 90 in New Orleans Mississippi state line north of St. Francisville 1926 current
US 63 35.35 56.89 I-20/US 167 in Ruston Arkansas state line at Junction City 1999 current Entire distance in Louisiana co-signed with US 167; only U.S. highway in Louisiana with same number as a current state route (LA 63)
US 65 101.05 162.62 US 425/LA 15 in Clayton Arkansas state line north of Lake Providence 1926 current
US 71 231.78 373.01 US 190 west of Krotz Springs Arkansas state line at Ida 1926 current
US 79 88.33 142.15 Texas state line southwest of Greenwood Arkansas state line north of Haynesville 1935 current
US 80 199.93 321.76 Texas state line west of Greenwood Mississippi state line at Vicksburg, MS 1926 current
US 84 182.32 293.42 Texas state line at Logansport Mississippi state line at Vidalia 1934 current
US 90 297.21 478.31 Texas state line at Orange, TX Mississippi state line at Pearlington, MS 1926 current LafayetteNew Orleans segment projected to become part of southern extension of I-49
US 165 228.51 367.75 US 90 east of Lake Charles Arkansas state line northeast of Bonita 1926 current
US 167 241.71 388.99 LA 14 in Abbeville Arkansas state line at Junction City 1926 current
US 171 178.23 286.83 US 90/LA 14 in Lake Charles US 79/US 80/LA 3094 in Shreveport 1926 current Only U.S. Highway completely within Louisiana; intersects with US 71 via LA 3094 in Shreveport
US 190 280.92 452.10 Texas state line west of Merryville US 90 southeast of Slidell 1926 current
US 371 86.98 139.98 I-49/LA 177 south of Evelyn Arkansas state line at Springhill 1994 current Official length and termini include projected westward extension on new alignment to I-49
US 425 121.00 194.73 Mississippi state line at Vidalia Arkansas state line north of Bastrop 1989 current

Current bannered routes[edit]

Number Length (mi) Length (km)[2] Southern or western terminus Northern or eastern terminus Formed Notes

US 51 Bus.
8.81 14.18 I-55/US 51 south of Ponchatoula US 51/US 190 in Hammond c. 1961 La DOTD designation: US 51-X

US 61 Bus.
10.75 17.30 US 61/US 190/US 190 Bus. in Baton Rouge 1960 La DOTD designation: US 61-X; route entirely duplicated by US 190 Business

US 61 Bus.
2.46 3.96 US 61/LA 10/LA 3057 in St. Francisville US 61/LA 3057 in St. Francisville c. 1959 Entire route duplicates LA 3057

US 71 Byp.
6.02 9.69 I-49/US 71/US 167 in Alexandria I-49/US 71/US 165 in Alexandria 1994 Entire route follows I-49

US 79 Byp.
5.22 8.40 US 79/LA 9/LA 9 Truck south of Homer US 79/LA 2/LA 9 Truck in Homer 2011

US 79 Byp.
4.4 7.1 US 79/US 80/US 80 Truck in Minden US 79/LA 531 in Minden 1990s Route follows combination of local roads, US 80, and LA 531

US 80 Byp.
0.21 0.34 US 80/LA 9/LA 519/LA 798-1 in Arcadia US 80/LA 9/LA 151 in Arcadia 19xx Route follows LA 798-1 and LA 151

US 80 Byp.
0.16 0.26 US 80/LA 799 in Gibsland 19xx Entire route follows LA 799

US 80 Byp.
0.46 0.74 US 79/US 79 Truck/US 80 in Minden US 79 Truck/US 80 in Minden 1990s Entire route follows US 79 Truck

US 84 Bus.
0.75 1.21 US 84/US 171 in Mansfield US 84 in Mansfield 2010 La DOTD designation: US 84-B

US 90 Bus.
2.59 4.17 US 90/LA 182 in Lafayette US 90 in Lafayette c. 1965 La DOTD designation: US 90-Y

US 90 Bus.
3.20 5.15 I-10/US 90 in Lake Charles I-210/US 90 in Lake Charles 1963 La DOTD designation: US 90-X

US 90 Bus.
7.99 12.86 US 90/LA 70/LA 182 in Morgan City US 90/LA 662 east of Amelia 1999 La DOTD designation: US 90-W

US 90 Bus.
14.33 23.06 US 90 in Avondale I-10/US 90 in New Orleans 1961 La DOTD designation: US 90-Z

US 165 Bus.
6.32 10.17 US 71/US 165/LA 1/LA 28 in Alexandria US 165/LA 1254 in Pineville c. 1962 La DOTD designation: US 165-X

US 165 Bus.
9.73 15.66 US 165 south of Richwood US 80/US 165 in Monroe 1970 La DOTD designation: US 165-Y

US 167 Bus.
4.88 7.85 I-49/US 71/US 71 Byp./US 167 in Alexandria I-49/US 71 Byp./US 167/LA 1/LA 28 in Alexandria 1994 La DOTD designation: US 167-X

US 171 Bus.
3.08 4.96 US 171 east of Zwolle US 171 north of Zwolle 2008 La DOTD designation: US 171-X

US 190 Bus.
10.75 17.30 US 61/US 61 Bus./US 190 in Baton Rouge 1960 La DOTD designation: US 61-X; entire route duplicates US 61 Business

US 190 Bus.
3.26 5.25 US 190 in Covington 1969 La DOTD designation: US 190-X

US 190 Bus.
3.92 6.31 US 11/US 190 in Slidell US 190 east of Slidell 1971 La DOTD designation: US 190-Y; official mileage does not reflect entire signed route

Former bannered routes[edit]

Note: Pre-1955 state routes co-signed with U.S. routes omitted for clarity.

Number Length (mi) Length (km) Southern or western terminus Northern or eastern terminus Formed Deleted Notes

US 61 Byp.
6.6 10.6 US 61/US 61 Bus./US 190/US 190 Bus./US 190 Byp. in Baton Rouge 1941 1963 Entire route duplicated by US 65 Byp. until 1951 and by US 190 Byp. after 1954; replaced by mainline US 61/190

US 65 Byp.
10.4 16.7 US 61/US 61 Byp./US 65 in Nesser US 61/US 61 Byp./US 65/US 190/US 190 Byp. in Baton Rouge 1941 1951 Entire route duplicated US 61 Byp.; deleted when US 65 southern terminus moved to Natchez, MS

US 71 Bus.
4.5 7.2 US 71/US 167 in Alexandria US 71/SR 20 in Alexandria 1947 1951 Replaced by mainline US 71 (former mainline US 71 became US 71 Byp.)

US 71 Bus.
4.6 7.4 US 71/US 167 in Alexandria US 71/US 165/US 167/LA 1 in Alexandria 1963 1981 Portion of route replaced by re-routed US 167; remainder covered by existing state highways

US 71 Byp.
4.8 7.7 US 71 in Alexandria US 71/SR 20 in Alexandria 1943 1947 Replaced by mainline US 71 (former mainline US 71 became US 71 Bus.)

US 71 Byp.
4.8 7.7 US 71/US 167/US 167 Byp. in Alexandria US 71/US 165 Byp./US 167/US 167 Byp./LA 1 in Alexandria 1951 1963 Entire route duplicated by US 167 Byp.; replaced by mainline US 71/167 (former mainline US 71/167 became US 71 Bus.)

US 80 Alt.
3.7 6.0 US 79/US 80 east of Bossier City US 71/US 79/US 80 in Shreveport 1937 1938 Temporary routing

US 90 Bus.
2.7 4.3 US 90/US 167 in Lafayette US 90 in Lafayette 1940s 1951 Replaced by mainline US 90 (former mainline US 90 became US 90 Byp.)

US 90 Byp.
2.1 3.4 US 90/US 167/US 167 Byp. in Lafayette US 90 in Lafayette 1951 1956 Replaced by mainline US 90 (former mainline US 90 covered by existing state highways)

US 165 Byp.
8.8 14.2 US 71 Byp./US 165/US 167 Byp. in Alexandria US 165 north of Pineville 1951 1963 Replaced by mainline US 165 (former mainline US 165 became US 165 Bus.)

US 165 Byp.
7.9 12.7 US 165 in Rilla US 80/US 165 in Monroe 1965 1970 Replaced by mainline US 165 (former mainline US 165 became US 165 Bus.)

US 167 Byp.
1.3 2.1 US 90 Byp./US 167 in Lafayette US 90/US 90 Byp./US 167 in Lafayette 1953 1956 Entire route followed US 90 Byp.; replaced by mainline US 90/167 (former US 90/167 covered by existing state highways)

US 167 Byp.
4.8 7.7 US 71/US 71 Byp./US 167 in Alexandria US 71/US 71 Byp./US 165 Byp./US 167/LA 1 in Alexandria 1951 1963 Entire route duplicated US 71 Byp.; replaced by mainline US 71/167 (former US 71/167 became US 71 Bus.)

US 190 Byp.
6.6 10.6 US 61/US 61 Bus./US 61 Byp./US 190/US 190 Bus. in Baton Rouge 1941 1963 Entire route followed US 61 Byp. (and US 65 Byp. until 1951); replaced by mainline US 61/190

US 190 Spur
0.74 1.19 US 190 in Hammond US 51 in Hammond 19xx 1991 Replaced by LA 3260

US 190 Spur
0.06 0.097 US 190 in Kinder US 165 in Kinder 19xx 200x Returned to local control

See also[edit]

References[edit]

External links[edit]