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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]
Louisiana Highway 1 (LA 1) is a state highway in Louisiana.At 431.88 miles (695.04 km), it is the longest numbered highway of any class in Louisiana. It runs diagonally across the state, connecting the oil and gas fields near the island of Grand Isle with the northwest corner of the state, north of Shreveport.
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]
The freeway east of Morgan City, bypassing Houma to the north, was originally built as Louisiana Highway 3052 (LS 3052); US 90 was shifted to it from its former alignment (now LA 182) once it was completed. US 90 replaced almost all of the Louisiana section of the San Diego–St. Augustine running Old Spanish Trail.
I-10 remains closed in both directions in Louisiana from the Texas state line to around Baton Rouge, according to the state's road conditions map. Portions of Interstate 55 are also shut down ...
The heaviest traffic on I-49 occurs within the cities of Shreveport and Opelousas. The stretch of freeway in Shreveport sees an average of 70,000 vehicles per day, while the stretch of freeway between Lafayette and Carencro sees an average of 55,000 vehicles per day, and the stretch of freeway through Opelousas sees an average of 45,000 ...
LA 12 is classified by the Louisiana Department of Transportation and Development (La DOTD) as a rural minor arterial. [7] Daily traffic volume in 2013 averaged between 2,500 and 4,300 vehicles for most of the route. The highest figure reported was 7,500 vehicles through DeQuincy, and the lowest figure was 2,400 between Starks and DeQuincy. [7] [2]
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)