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List of state highways in Louisiana
| Louisiana State Highways | |
|---|---|
.svg)  .svg) State highway markers for different years: 1955 (left), 1990 (center), 2008–present (right) | |
| System information | |
| Length | 16,698.41 mi[3] (26,873.49 km) |
| Formed | 1955 renumbering[1] |
| Notes | Since 2008, La DOTD has been replacing the green-and-white state highway markers with a black-and-white version using the same design.[2] The new shields have a black background, white silhouette, black letters and numbers, and no frame outline (see photo below for comparison). |
| Highway names | |
| State | Louisiana Highway X (LA X) |
| Special routes: | Louisiana Highway X Alternate (LA X Alt.); Louisiana Highway X Business (LA X Bus.); Louisiana Highway X Bypass (LA X Byp.); Louisiana Highway X Spur (LA X Spur); Louisiana Highway X Truck (LA X Truck) |
| System links | |
| |
The state highways in the U.S. state of Louisiana are owned and maintained by the Louisiana Department of Transportation and Development (La DOTD).
- ^ "Act No. 40, House Bill No. 311". State-Times. Baton Rouge. June 18, 1955. pp. 3B – 7B.
- ^ Courville, Ed (July 16, 2007). "Recommendation for State Highway Signs" (PDF). Louisiana Department of Transportation and Development. Retrieved October 30, 2019.
- ^ "La DOTD GIS". Louisiana Department of Transportation and Development. 2013. Archived from the original on October 16, 2013. Retrieved October 19, 2013.
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