LA 1077 crosses LA 22 (Mulberry Street) one block west of a swing bridge spanning the Tchefuncte River. This junction also marks the southern terminus of LA 21, which begins a concurrency with LA 1077. The combined route zigzags through the center of Madisonville, turning west from Main Street onto St. John Street then northwest onto Covington Street.
LA 1077 intersects LA 22 at Mulberry Street, situated one block west of a Tchefuncte River swing bridge. This intersection also denotes the southern terminus of LA 21, which merges with LA 1077. The combined route zigzags through Madisonville, shifting west from Main Street onto St. John Street and then northwest onto Covington Street.