State Highway 312 (SH 312) is a proposed state highway from
US Highway 90 Alternate (Alt. US 90) just west of
SH 6 south to
Interstate 69/
U.S. Highway 59 (I-69/US 59). The highway was originally designated in 1986 as SH 362, and was renumbered as SH 312 in 1987. , the highway has yet to be built.
The original SH 312 was designated on March 21, 1939, from
Karnes City
Karnes City is a city in and county seat of Karnes County, Texas, United States. The population was 3,111 at the 2020 census, up from 3,042 at the 2010 census. The town was named after Henry Karnes of the Texas Revolution. Karnes is sout ...
southwest to the Atascosa–Karnes county line.
On September 26, 1939, this became part of
SH 80.
References
312
{{Texas-road-stub