Interstate 12 -LRB- I-12 -RRB- is an intrastate Interstate Highway located entirely within the state of Louisiana. I-12 starts in Baton Rouge at Interstate 10, and travels along the North Shore of Lake Pontchartrain before ending at the intersection of Interstate 10 and Interstate 59 near Slidell.
Interstate 12 est une autoroute Interstate de 85,59 m de long en Louisiane, reliant l'Interstate 10 à chaque extrémité.