 The ferry service and adjoining portions of LA 10 were once part of the main highway route between Baton Rouge and Alexandria and, on a larger scale, New Orleans and Shreveport.When the original state highway system was created in 1921, it was designated as part of State Route 1, which followed the Jefferson Highway auto trail.Five years later, it became the original route of US 71 when the U.S. Highway System was created.