TX 21 Travel Info
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State Highway 21, or SH 21, runs from the Texas-Louisiana boundary east of San Augustine to San Marcos in east and central Texas.
SH 21 was one of the original 26 routes proposed in Texas in 1917 along a route from St. Augustine to Gonzales. There was proposed extension southward to Karnes City by 1922, but most of it was transferred to SH 80 inste ... more
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