Page "Jefferson Highway" Paragraph 13

*** From Kenner to Geismar, the Jefferson Highway followed alongside the east bank levee of the Mississippi River which, due to various sections of levee being relocated during the 1920s and 1930s, is often a significant distance removed from the modern River Road.

Also, a two-mile section between Norco and Montz was eliminated in 1935 when the parallel Airline Highway bridge across the Bonnet Carré Spillway was opened.

However, the route is approximated by LA 48 to Norco, River Road to Montz, LA 628 to LaPlace, LA 44 to Burnside, LA 942 to Darrow, and LA 75 to Geismar.

( Portions of the River Road at Reserve and Gramercy are still known as Jefferson Highway.