Louisiana Highway 12

Louisiana Highway 12
Route of LA 12 highlighted in red
Route information
Maintained by Louisiana DOTD
Length:	34.49 mi (55.51 km)
Existed:	1955 renumbering – present
Major junctions
West end:	SH 12 at Deweyville, TX
	LA 27 in DeQuincy, LA
East end:	US 171 / US 190 in Ragley, LA
Location
Parishes:	Calcasieu, Beauregard
Highway system
Louisiana Highway System Interstate US State ← I-12 LA 13 →

Louisiana Highway 12 (LA 12) is a state highway located in southwestern Louisiana. It runs 34.49 miles (55.51 km) in an east–west direction from the Texas state line west of Starks to a junction with U.S. Highway 171 (US 171) and U.S. Highway 190 (US 190) in Ragley.

The route connects the city of DeQuincy with US 171 and US 190, two of the region's main highways. It is also the only highway crossing the Texas–Louisiana border between US 190 to the north and the concurrent Interstate 10 (I-10) and US 90 to the south. LA 12 enters both Calcasieu Parish and Beauregard Parish twice along its route. This is due to a northern protrusion of the former from an otherwise linear border that encompasses the DeQuincy area.

LA 12 traverses an area of the state known as Acadiana and is also signed as the Acadiana Trail.

From the west, LA 12 begins at the Texas state line, midway across a swing bridge over the Sabine River. It continues the route of Texas State Highway 12 (SH 12) from the Newton County community of Deweyville into Calcasieu Parish, Louisiana. LA 12 heads east as an undivided two-lane highway through a largely uninhabited and heavily wooded area in the northwestern portion of the parish. After about 4 miles (6.4 km), scattered residences appear as the highway approaches the small community of Starks. Passing through the center of town, LA 12 intersects LA 109, which connects with Vinton to the south and Merryville to the north. East of Starks, LA 12 curves northeast and runs parallel to the Kansas City Southern Railway (KCS) tracks for the next 13 miles (21 km).