Highway Designation File
Transportation Planning and Programming Division
Current Description-Effective Date-Authority
RANCH TO MARKET ROAD NO. 12
Minute Order 019247, dated 03/26/1942
From San Marcos to Wimberley. To replace part of SH 80.
Form San Marcos to Wimberly and thence to Dripping Spring. (Hays
County) Extended Wimberly to Dripping Springs.
From IH 35 at San Marcos westward and northward via Wimberley to
Dripping Springs, a distance of approximately 30.7 miles. (Hays
County) Extended eastward approximately 1.25 miles from Loop 82
along Hopkins Street and Buggs Lane to IH 35.
From IH 35 at San Marcos, westward and northward approximately 35.6
miles via Wimberley and Dripping Springs, to road intersection. (Hays
County) Extended north approximately 5.0 miles from Dripping Springs.
In San Marcos, from IH 35, westward and northward via Wimberley and
Dripping Springs approx. 38.0 miles to RM 3238 west of SH 71. (Hays and
Travis Counties) Section of approximately 2.6 miles
added to present end of RM 12 to jct. of RM 3238 and a county road.
Minute Order 112297, dated 06/24/2010
From RM 3238 near the Travis/Hays County line, southward via Dripping Springs and Wimberley to SH 123 in San Marcos, approximately 38 miles. (Hays and Travis Counties) Segment from approximately 4 miles west of IH 35 to IH 35 redesignated as SH 80; FM 3407 redesignated as RM 12.