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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 ]
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:
Interstate 49 (I-49) is an Interstate Highway that currently spans 244.021 miles (392.714 km) in a north–south direction in the US state of Louisiana. [1] Currently, I-49 runs from I-10 in Lafayette to the Arkansas state line.
Interstate 55 (I-55) is a part of the Interstate Highway System that spans 964.25 miles (1,551.81 km) from LaPlace, Louisiana, to Chicago, Illinois. [2] Within the state of Louisiana, the highway travels 66 miles (106 km) from the national southern terminus at I-10 in LaPlace to the Mississippi state line north of Kentwood.
Interstate 20 (I-20) is a part of the Interstate Highway System that spans 1,539.38 miles (2,477.39 km) from Reeves County, Texas, to Florence, South Carolina. [2] Within the state of Louisiana, the highway travels 189.84 miles (305.52 km) from the Texas state line west of Greenwood to the Mississippi River, [1] which it crosses into Vicksburg, Mississippi.
Interstate 110 (Louisiana) Interstate 210 (Louisiana) Interstate 310 (Louisiana) Interstate 410 (Baton Rouge, Louisiana) Interstate 410 (New Orleans, Louisiana) Interstate 410 (Louisiana 1955) Interstate 410 (Louisiana 1960) Interstate 410 (Louisiana 1969) Interstate 510; Interstate 610 (Louisiana) Interstate 910; Interstate 12; Interstate 20 ...
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related to: louisiana map with highways and interstates