Transportation Planning and Programming Division
Current Description-Effective Date-Authority

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Certified Mileage (Open to Traffic)

37.275

2010

RANCH TO MARKET ROAD NO. 12

Minute Order 019247, dated 03/26/1942

From San Marcos to Wimberley.  To replace part of SH 80.

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Minute Order 021215, dated 05/31/1945 (date of agreement)

Form San Marcos to Wimberly and thence to Dripping Spring. (Hays County) Extended Wimberly to Dripping Springs.

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Minute Order 053846, dated 12/19/1963, Adm. Cir., 18-1964, dated 02/01/1964

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.

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Minute Order 059591, dated 06/02/1967 Adm. Cir., 104-1967, dated 09/01/1967

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.

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Minute Order 085738, dated 04/30/1987; 085740,  dated 04/30/1987; Adm. Ltr. 10-1987

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.

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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.

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