.svg) State Route 1 | |
|---|---|
| Route information | |
| Maintained by Louisiana DOTD | |
| Length | 452.71 mi (728.57 km) |
| Existed | 1924–1955 |
| Major junctions | |
| South end | End state maintenance south of Pointe a la Hache |
 SR 32 at Poydras  SR 2 / SR 33 in New Orleans  US 51 / SR 53 at Laplace    US 71 / US 190 / SR 3 / SR 7 in Baton Rouge  US 165 / SR 14 in Alexandria  US 84 / SR 6 at Clarence  US 171 / SR 42 at Mansfield   US 79 / US 80 / SR 4 at Shreveport | |
| North end | US 80 at Texas state line |
| Location | |
| Country | United States |
| State | Louisiana |
| Highway system | |
| |
Louisiana State Route 1 (LA 1) was one of the 98 original state highways that were established in 1924. It was signed for the Jefferson Highway, an auto trail that ran from New Orleans to Winnipeg. LA 1 curved through the entire state, spanning from Shreveport through Alexandria and Baton Rouge to New Orleans, ending south of Pointe a la Hache. It was renumbered for the most part as US 71 and US 171.