Highway Designation File

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


Certified Mileage (Open to Traffic)
9.223 2010

FARM TO MARKET ROAD NO. 511

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

From US 83 at Olmito to SH 48 near Port Brownsville; and thence southward to SH 4.  (Cameron County)  New Designation.



Minute Order 023776, dated 09/09/1947; Adm. Cir. 037-1947

From US 281 near Cavazos to US 83 at or near Olmito; and from another point on US 83 at Olmito to SH 48 near Port Brownsville; thence southward to SH 4; thence southward and westward 4.0 miles to a paved county road.  (Cameron County)  Section from US 281 to US 83 at Olmito added, and section from SH 4, southward and westward a distance of 4 miles, added.



Minute Order 025674, dated 11/23/1948

From US 281, near Cavazos to US 83 at or near Olmito; and from another point on US 83 at Olmito, to SH 48 near Port Brownsville; thence southward to SH 4; thence southward and westward 4.0 miles to a paved county road; thence northwestward to SH 4 in Brownsville.  (Cameron County) Extended from paved county road northwestward to SH 4 in Brownsville.



Adm. Order, dated 10/07/1949

From US 281 near Cavazos to US 83 at or near Olmito; and from another point on US 83 at Olmito, to SH 48 near Port Brownsville; thence southward and westward to FM 1419.  (Cameron County)  Section of this route, from present termination point to SH 4 in Brownsville, cancelled and combined with FM 1419 (3.4 miles removed).



Adm. Auth., dated 01-29-57; Adm. Cir. 008-1957, dated 02/01/1957

From US 83 at Olmito, southeastward to SH 48 near Port Brownsville; and from another point on SH 48 near Port Brownsville, southward and westward to FM 1419, a distance of approximately 16.4 miles.  (Cameron County) Mileage from US 281 to Olmito transferred to FM 1732 , a decrease of approximately 5.2 miles.



Minute Order 062704, dated 08/26/1969; Adm. Cir. 104-1971, dated 10/15/1971

From US 83 at Olmito, southeastward via Port Brownsville, then southward and westward to FM 1419, a distance of approx. 13.1 miles.  (Cameron County)  Relocated at Port Brownsville, removing break in route at SH 48.



Adm. Cir. 125-1971, dated 12/15/1971

Administrative Circular 104-1971, dated October 15, 1971, should have shown the length of FM 511 as 16.1 miles instead of 13.1 miles.



Minute Order 105686, dated 06/27/1995; DesLtr 03-1995, dated 06/30/1995
Minute Order 115371, dated 11/15/2018 (Rescinds Minute Order 105686)

Minute Order 105686: From US 83 at Olmito, southeastward to FM 3248, a distance of approx. 6.595 miles. (Cameron County)  Mileage from FM 3248 southeastward, southward, and westward to UR 1419 [FM 1419] transferred to UR 511. ["Transferred" mileage, as noted on the Highway Designation File page for UR 511, is approximately 9.505 miles.]

Minute Order 115371 general description: Minute Order 115371 rescinds Minute Order 105686. The result of this rescission is the elimination of the Urban Road (UR) system. The Farm to Market (FM) and Ranch to Market (RM) roadways which were intended to be redesignated as Urban Roads under the provisions of Minute Order 105686 revert back to their FM/RM designations. Minute Order 115371 declares that the provisions of Minute Order 105686 were never implemented, and although the UR designations were in effect during the interim between these two Minute Orders, the affected roadways continued to be referred to by their FM or RM designations. Only the Highway Designation Files made reference to the UR designations during this interim period. Upon the passing of Minute Order 115371, the affected Highway Designation Files have been updated retroactively to reflect the FM/RM designations.

Minute Order 115371 as it affects FM 511: Any mileage that was previously described as "transferred to UR 511" reverts back to FM 511. This is retroactive to the date of passage of Minute Order 105686. The Highway Designation File page for UR 511 has been removed.