Length: 696 mi. Direction: south-north. Louisiana Highway 1 (LA-1) passes through the entire state of Louisiana diagonally, beginning in Grand Isle, and terminating near Rodessa in the Texas state line. The road crosses the parishes of Jefferson, Lafourche, Assumption, Ascension, Iberville, West Baton Rouge, Pointe Coupee, Avoyelles, Rapides, Natchitoches, Red River, and Caddo. It was opened in 1955.
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