When the Jefferson Highway auto trail was designated in 1916, Clay Cut and Hope Villa Roads became part of the new road (there is now another Claycut Road in Baton Rouge, located south of the present-day LA-73).
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From the west, LA 426 begins at an intersection with LA 73 (Jefferson Highway) in Baton Rouge.
LA 948 connects these highways to the paralleling LA 73 (Jefferson Highway) just to the east (where it ends).