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

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 transferred to UR 511.