From the west, LA 122 begins at an intersection with
US 71 in
Montgomery, a small town in
Grant Parish. The intersection is also a junction with
LA 1239-1 (
Old Jefferson Highway), a minor local route. LA 122 heads northeast from Montgomery into a thickly wooded rural area. Over the next , small clusters of homes sporadically line the highway at such points as the tiny community of
Hargis. As it approaches the
Winn Parish line, LA 122 curves to the southeast through the twin communities of
Verda and
New Verda. Here, the highway intersects
LA 1240, which heads due south to a point on US 71 near
Aloha. Shortly afterward, LA 122 begins a brief concurrency with
LA 471, which heads north toward
Winnfield, the
seat of neighboring Winn Parish. Just beyond New Verda, LA 471 continues ahead to the south while LA 122 turns eastward onto an intersecting road. The surroundings become more sparsely populated as the highway passes along the north side of
Lake Iatt, which contains a game and fish preserve. About beyond the turn-off, LA 122 curves sharply to the south before resuming an eastward course through an area known as
Faircloth. The route then turns southeast into the Catahoula Ranger District of the
Kisatchie National Forest. LA 122 winds its way through the piney woods for another before entering the village of
Dry Prong. Traveling along Grove Street, the highway reaches its eastern terminus at a point on
LA 123 located from a junction with
US 167, connecting with Winnfield to the north and
Alexandria to the south.
Route classification and data LA 122 is an undivided two-lane highway for its entire length. The posted speed limit is generally , reduced as low as through populated areas. ==History==