Highway Designation File

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


Certified Mileage (Open to Traffic)
17.053 2010

FARM TO MARKET ROAD NO. 509

Minute Order 021215, dated 07/03/1945 (Date of Agreement)

From US 83, south of Harlingen to Rangerville and thence southeastward to Sam Houston Blvd.  (Cameron County)  New Designation.



Minute Order 021215, dated 07/03/1945 (Date of Agreement)

From US 83 approximately 3.0 miles southeast of Harlingen southwestward to connection with FM 675.  (Cameron County)  Revision to clarify description (see FM 675).



Minute Order 088653, dated 04/26/1989; Adm. Ltr. 002-1992, dated 05/01/1992

From US 77/83 southeast of Harlingen, southwestward and southward approximately 10.7 miles to the General Services Administration Complex at the Los Indios International Bridge.  (Cameron County)  New description; section of approx. 3.0 miles added from present end of FM 509 southward to connect with the General Services Admin. Complex at the Los Indios International Bridge site.



Minute Order 104783, dated 12/21/1994; DesLtr 06-1994, dated 12/28/1994

From FM 508, 2.5 miles east of the intersection of FM 507, southward approx. 2.0 miles to FM 1595; then southward approx. 1.8 miles over existing FM  1595, to FM 106; then southwestward approx. 4.0 miles over existing SL 590, to US 77/83; then southwestward on new location to the General Services Administration Complex at the Los Indios International Bridge at the Texas/Mexico border, a total distance of approx. 17.2 miles.  (Cameron County)  New description; mileage added from SL 590, and FM 509 extended from FM 675 southward to border.



Minute Order 105686, daetd 06/27/1995; DesLtr 03-1995, dated 06/30/1995

From FM 508, 2.5 miles east of FM 507, southward to UR 509 at FM 1595; and from another point on UR 509 at US 87, southwestward to the General Services Administration Complex at the Los Indios International Bridge at the TX/Mexico border, a total distance of approximately 11.530 miles. (Cameron County)  Mileage from FM 1595 southward and southwestward to US 77 transferred to UR 509.