From the west, LA 76 begins at a T-intersection with LA 77 in the small Iberville Parish town of Maringouin. It heads south, continuing the path of LA 77 alongside Bayou Maringouin. After , LA 3000 picks up the route and proceeds a short distance further to an interchange with I-10 at Ramah. Meanwhile, LA 76 turns northeast onto Rosedale Road and continues into the village of Rosedale. Here, the highway has a second junction with LA 77, which follows Bayou Grosse Tete through the area. LA 76 crosses a bascule bridge over the bayou and immediately intersects LA 411 on the opposite bank. Just northeast of Rosedale, the surroundings change abruptly from rural farmland to thickly wooded wetlands, and LA 76 crosses into West Baton Rouge Parish.