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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).
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:
In the pre-1955 state highway system, LA 149 was part of State Route C-1792. [44] LA 149 was created in the 1955 Louisiana Highway renumbering, [45] largely following a parallel alignment along Main Street. [42] [46] It was also extended north from its original terminus at LA 150 during the early 1960s when I-20 was constructed through the area ...
List of state highways in Louisiana (1–99) List of state highways in Louisiana (100–149) List of state highways in Louisiana (150–199) List of state highways in Louisiana (300–349) List of state highways in Louisiana (350–399) List of state highways in Louisiana (400–449) List of state highways in Louisiana (450–499)
Old River (Louisiana), in Pointe Coupee and West Feliciana parishes; ... USGS Geographic Names Information System; USGS Hydrologic Unit Map - State of Louisiana (1974)
The Interstate Highway System in Louisiana consists of 933.84 miles (1,502.87 km) [4] of freeways constructed and maintained by the Louisiana Department of Transportation and Development (La DOTD). The system was authorized on June 29, 1956 when President Dwight D. Eisenhower signed into law the Federal Aid Highway Act of 1956 . [ 1 ]
List of state highways in Louisiana (100–149) List of state highways in Louisiana (150–199) List of state highways in Louisiana (300–349) List of state highways in Louisiana (350–399) List of state highways in Louisiana (400–449) List of state highways in Louisiana (450–499) List of state highways in Louisiana (500–549) List of ...
The Louisiana Natural and Scenic Rivers System was established in 1970, administered by the Louisiana Department of Wildlife and Fisheries, and includes approximately 3000 miles of waterways. [ 1 ] [ 2 ]