Louisiana Highway 22

Louisiana Highway 22
Route of LA 22 highlighted in red
Route information
Maintained by Louisiana DOTD
Length:	71.147 mi (114.500 km)
Existed:	1955 renumbering – present
Tourist routes:	Louisiana Scenic Byways: Louisiana Scenic Bayou Byway
Major junctions
West end:	LA 75 / LA 942 in Darrow
	LA 44 in Burnside LA 70 in Sorrento I-10 in Sorrento US 61 in Sorrento LA 16 south of French Settlement LA 42 in Springfield I-55 / US 51 in Ponchatoula LA 21 in Madisonville
East end:	US 190 in Mandeville
Location
Parishes:	Ascension, Livingston, Tangipahoa, St. Tammany
Highway system
Louisiana Highway System Interstate US State ← LA 21 LA 23 →

Louisiana Highway 22 (LA 22) is a state highway located in southeastern Louisiana. It runs 71.15 miles (114.50 km) in a general east–west direction from the junction of LA 75 and LA 942 in Darrow to U.S. Highway 190 (US 190) in Mandeville.

The route traverses a variety of terrain and surroundings over the course of its journey, which begins at the Mississippi River in rural Ascension Parish. It also crosses several navigable waterways with movable bridges spanning two of them: the Amite River and Tchefuncte River. After crossing both Interstate 10 (I-10) and US 61 in Sorrento, LA 22 winds through a cypress swamp in Livingston Parish west of Lake Maurepas.

Near the town of Springfield, the highway enters the thick pine forest characterizing the north shore of Lake Pontchartrain and intersects the concurrent I-55/US 51 in Ponchatoula. On its east end, LA 22 becomes a heavily traveled residential and commercial corridor in suburban St. Tammany Parish between Madisonville and Mandeville. This stretch runs south of the parallel I-12 corridor and feeds traffic onto US 190 and the Lake Pontchartrain Causeway to the New Orleans area.