| 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[3] (4,182.099 km) |
| Formed | November 11, 1926 (designated);[1] February 1928 (signed)[2] |
| 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 | |
| |
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).[3]
- ^ 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.
- ^ "Standard U.S. Road Markers Being Erected". Alexandria Daily Town Talk. Alexandria, LA. February 14, 1928. p. 9.
- ^ a b Louisiana Department of Transportation and Development, Highway Inventory Unit (2018). "LRS Conversion Tool". Louisiana Department of Transportation and Development. Retrieved January 4, 2019.