It then intersects LA 81 and US 190 before passing through Livonia. The highway then turns to the west and passes through Fordoche and intersects LA 81 again before turning to the north. LA 77 then meets its northern terminus at LA 10 and the road continues north assigned as LA 10.
It then merges with LA 81 and US 190, proceeding through Livonia. The highway shifts direction to the west, passing through Fordoche before intersecting LA 81 once more. LA 77 ultimately converges with LA 10 in the north, continuing as LA 10.