 LA 10 was created in the 1955 renumbering, largely combining the routes of former State Routes 22 and 35.Pieces of important cross-state routes such as former State Routes 1 and 5, as well as short connectors such as former State Routes 27, 41, and 257 were used to create a continuous route running north of and parallel to the existing US 190 corridor across the state.Despite its length, most of the route of LA 10 has remained the same since 1955.