Louisiana Highway
| Louisiana State Highways | |
|---|---|
.svg)  .svg)
State highway markers for different years: 1955 (left), 1990 (center), 2008–present (right)
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| System information | |
| Length | 16,698.41 mi (26,873.49 km) |
| Formed | 1955 renumbering |
| 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. 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 | |
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Note: Year of deletion appears in parentheses.
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