Texas State Highway 312

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State Highway 312

Route information
Maintained by TxDOT
Major junctions
South end I-69 / US 59
North end
US 90 Alt. in Sugar Land
CountryUnited States
Highway system
SH 311 SH 313

State Highway 312 (SH 312) is a proposed state highway from Alt. US 90 just west of SH 6 south to Interstate 69/U.S. Highway 59. The route was originally designated in 1986 as SH 362, and was renumbered as SH 312 in 1987. As of 2020, the highway has yet to be built.

The original SH 312 was designated on March 21, 1939, from Karnes City southwest to the Atascosa/Karnes County Line.[2] On September 26, 1939, this became part of SH 80.


  1. ^ Transportation Planning and Programming Division (n.d.). "State Highway No. 312". Highway Designation Files. Texas Department of Transportation. Retrieved 2008-03-15.
  2. ^ "Minutes" (PDF). publicdocs.txdot.gov. Texas Department of Transportation. March 21, 1939. Archived (PDF) from the original on October 22, 2017. Retrieved 28 April 2023.