[2] The route's mileposts increase from the northern end contrary to common practice.

[4] The route's mileposts increase from the eastern end contrary to common practice.

Louisiana Highway 904 (LA 904) ran 0.8 miles (1.3 km) in a southeast to northwest direction from a dead end to a junction with US 84 west of Ferriday.

[7] The route's mileposts increase from the eastern end contrary to common practice.

Louisiana Highway 910 (LA 910) runs 2.78 miles (4.47 km) in an east–west direction along Dora Knapp Road from an intersection with Black Hawk-Levee Road west of Shaw to a junction with LA 15 at Shaw.

[9] The route's mileposts increase from the eastern end contrary to common practice.

Louisiana Highway 912 (LA 912) ran 0.1 miles (0.16 km) in a southwest to northeast direction along Post Office Street from the Union Pacific Railroad tracks to a junction with LA 18 in St. James.

Louisiana Highway 915 (LA 915) runs 2.66 miles (4.28 km) in an east–west direction from a local road northwest of Norris Springs to a junction with LA 916 northeast of Norris Springs.

[13] The route's mileposts increase from the eastern end contrary to common practice.

Louisiana Highway 921 (LA 921) runs 13.03 miles (20.97 km) in a general north–south direction from a local road southwest of Maitland to a local road north of Foules.

Louisiana Highway 922 (LA 922) runs 2.04 miles (3.28 km) in a northwest to southeast direction from a local road in Harrisonburg to another local road east of Harrisonburg.

Louisiana Highway 923 (LA 923) runs 10.32 miles (16.61 km) in a general north–south direction from a local road west of Jonesville to a junction with LA 124 at Wallace Ridge.

As designated in the 1955 Louisiana Highway renumbering, LA 927 originally comprised 13 different road segments in Jonesville.

[26] As of 2019, the portion east of LA 431 is under agreement to be removed from the state highway system and transferred to local control.

It then follows a serpentine path east along Coontrap Road, south along West New River Street, and east across the New River to its terminus at LA 44 (North Burnside Avenue) in Gonzales.

It then turns north onto Roddy Road and proceeds to a junction with US 61 (Airline Highway) shortly afterward.

Louisiana Highway 940 (LA 940) runs 1.00 mile (1.61 km) in an east–west direction along West Orice Roth Road from South Darla Avenue to LA 44 in Gonzales.

[33] The route's mileposts increase from the eastern end contrary to common practice.

[34] The route's mileposts increase from the northern or eastern end contrary to common practice.

[35] The route follows the east bank levee of the Mississippi River between Darrow and Burnside.

LA 942 carries what was once a small piece of the Jefferson Highway auto trail, designated in 1916.

US 61 followed the route from 1926 until 1933 when the Airline Highway was opened between Baton Rouge and the Bonnet Carré Spillway.

[37] The route initially heads west from LA 1 as paved two-lane highway through an area known as Palo Alto.

[38] The V-shaped route heads southeast on Vatican Drive from LA 308, which follows alongside Bayou Lafourche.

It then turns northeast onto St. Patrick Street and dips underneath the Union Pacific Railroad tracks to its terminus at LA 3089 (Marchand Drive).

As designated in the 1955 Louisiana Highway renumbering, LA 945 originally comprised three different road segments in and near Donaldsonville.

[39] It is an undivided four-lane highway with a center turn lane for its entire length.

As of 2018, a portion of LA 946 is under agreement to be removed from the state highway system and transferred to local control.

[42] The route's mileposts increase from the eastern end contrary to common practice.