Louisiana State Route 1
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| Route information | |
| 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
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| North end: |
US 80 at Texas state line |
| Highway system | |
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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.
Beginning at a point on the Texas State Line, near Waskom, through Greenwood, Shreveport, Grand Cane, Mansfield, Sodus, Belmont, Marthaville, Robeline, Natchitoches, Montgomery, Colfax, ALexandria, Lecompte, Bunkie, Melville, Rosedale, Port Allen, Baton Rouge, Hope Villa, Burnside, Convent, Kenner, Shrewsbury, Protection Levee at South Claiborne Avenue, New Orleans, Louisiana, South Claiborne Avenue both sides to Canal Street, North Claiborne Avenue both sides to Poland Avenue, St. Claude Avenue, both sides to St. Bernard Parish Line, Mereaux, Violet, Poydras, Dalcour, Phoenix, Point-a-la-hache to Fort St. Philip. - 1924 Louisiana Legislative Route Description
As the successor to the Jefferson Highway, LA 1 started a little further south than the Jefferson Highway, but was the same route, more or less. LA 1 began in Pointe-a-la-Hache, continuing north through small communities, making its way to New Orleans. The route description from New Orleans north is as follows:
From the southern terminus at Common Street, LA 1 followed St. Charles Avenue, Canal Street, City Park Avenue, and Metairie Road into Jefferson Parish. Leaving New Orleans, LA 1 followed Metairie Road, Shrewsbury Road, and Jefferson Highway to Kenner.
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