sentences:  In the original Louisiana Highway system in use between 1921 and 1955, LA 76 was part of several different routes, including State Route 998 along Bayou Maringouin; State Route 142 to Rosedale; State Route 1 and State Route 7 to Lobdell Highway; and State Route 30 into Port Allen.The section between Rosedale and Port Allen had formerly been part of one of the state's most important highways, the Jefferson Highway auto trail, which was the main traffic route between New Orleans, Baton Rouge, and Shreveport in the days before the numbered U.S. Highway system.It became part of the original alignment of US 71 in 1926 and then US 190 in 1935 when the latter was extended west from Baton Rouge.