Highway Designation File

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


Certified Mileage (Open to Traffic)
36.594 2010

FARM TO MARKET ROAD NO. 666

Minute Order 021215, dated 09/10/1945 (date of agreement)

From Banquete southward and eastward to Driscoll  (Nuaces County). New Designation.



Minute Orders 027078, 027080, dated 07/14/1949

From US 59 in Mathis southeastward to Banquete, thence southward and eastward to Drisco  (Nueces and San Patricia Counties)  Extended from Banquete to Mathis (20.8 miles).



Adm. Auth., dated 11/02/1955

From SH 359 in Mathis southward via Banquete to FM 665 approximately 5.4 miles west of Driscoll., a distance of approximately 28.3 miles. (San Patricia and Nueces Counties)  Section from US 77 at Driscoll westward approximately 5.4 miles transferred to FM 665. To become effective upon issue of the next revised edition of the Official Highway Travel Map.



Minute Order 042972, dated 10/31/1957; Adm. Cir., 001-1958, dated 01/01/1958

From SH 359 at Mathis, southward via Banquete to FM 70, northwest of Bishop, a distance of approx. 36.6 miles. (San Patricio and Nueces Counties) Extended from FM 665 to FM 70, adding approximately 8.3 miles.