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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).
Longest highway in Louisiana. LA 2: 189.490: 304.955 SH 49 west of Trees at the Texas state line: US 65 north of Lake Providence: 1955: current LA 3: 35.705: 57.462 I-20, US 71, and LA 72 in Bossier City: AR 29 at the Arkansas state line north of Plain Dealing: 1955: current LA 4: 164.537: 264.797 US 71 north of Loggy Bayou: LA 605 in Newellton
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 ]
Map of the United States with Louisiana highlighted. Louisiana is a state located in the Southern United States.According to the 2020 United States census, Louisiana is the 25th most populous state with 4,657,757 inhabitants and the 33rd largest by land area spanning 43,203.90 square miles (111,897.6 km 2) of land. [1]
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)
Public domain data provided by the National Atlas of the United States of America; Tool: The map is created with Octave scripts developed by Ikonact; Author: Ikonact: Permission (Reusing this file) Any use of this map is subject of the license(s) stated below with the condition that you credit (Wikimedia Commons user: Ikonact) as the author
US 90 enters Louisiana at the Texas line over the Sabine River as part of I-10. Separating at exit 4 and running parallel on the north side of I-10 through Sulphur, before rejoining I-10 east of Westlake, crossing the Calcasieu River, and again splitting from I-10 at exit 31B (running on the south side of I-10) going through Lake Charles as Fruge, West 4th, then East 4th, before leaving town.
The Louisiana Scenic Byways are a network of roadways within the U.S. state of Louisiana that have been deemed of cultural, historical, or scenic value. The routes follow various segments of the state-maintained highway system, usually rural in character, and are mostly located in the central and southern areas of the state.