Highway Designation File

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


Certified Mileage (Open to Traffic)
16.304 2010

FARM TO MARKET ROAD NO. 1518

Minute Order 027505, dated 09/28/1949

From SH 346 south of San Antonio, southeastward to a road intersection, a distance of approximately 3.4 miles.  (Bexar County)  New Designation.



Minute Order 033179, dated 12/17/1952

From a road intersection, eastward to SH 346; thence southeastward to another road intersection, a distance of approximately 6.6 miles.  (Bexar County)  Extended approx. 3.6 miles from SH 346 westward to a county road intersection.



Minute Orders 034075 and 034076, dated 04/23/1953; Adm. Auth., dated 05/25/1953

From US 81 at Lytle, eastward via Bexar Community and Somerset to a road intersection, a distance of approximately 16.0 miles.  (Bexar County)  Extended approx. 9.4 miles to US 81, 6.9 miles of which transferred from cancelled FM 1749.



Minute Order 040955, dated 11/21/1956; Adm. Cir. 016-1957, dated 03/01/1957

From US 81 at Lytle, eastward via Somerset and Thelma to FM 1937 near Losoya, a distance of approximately 22.4 miles.  (Atascosa and Bexar Counties)  Extended eastward approx. 6.1 miles.



Minute Order 043838, dated 04/24/1958; Adm. Auth., dated 08/08/1958

From US 81 at Lytle, eastward and northeastward via Somerset, Thelma, Losoya, and Elmendorf to FM 78 east of Randolph Air Force Base; and from another point on FM 78 at Schertz northwestward to US 81 at Selma, a total distance of approximately 61.8 miles.  (Bexar, Atascosa, and Guadalupe Counties)  Section of FM 1537 from Losoya to US 87 cancelled and combined, adding approx. 21.5 miles; Minute 43838 extended from US 87 northward to US 50, adding approx. 9.0 miles; FM's 1316 and 1621 cancelled and combined, adding approximately 6.0 miles and 4.0 miles respectively; a total increase of approx. 40.5 miles.



Minute Order 053108, dated 06/28/1963; Adm. Cir.146-1963, dated 10/01/1963

From FM 471 in La Coste, southward to US 81 in Lytle; and from another point on US 81 in Lytle, eastward and  northeastward via Somerset, Thelma, Losoya, and Elmendorf to 78 east of Randolph Air Force Base; and from another point on FM 78, northwestward to US 81 at Selma, a total distance of approximately 66.5 miles.  (Medina, Atascosa, Bexar, and Guadalupe Counties)  Extended northward approx. 6.6 miles from US 81 to FM 471.



Adm. Auth., dated 08/23/1973; Adm. Cir. 110-1973, dated 09/15/1973

From SH 16 eastward and northeastward via Elmendorf to FM 78 east of Randolph Air Force Base; and from another point on FM 78 at Schertz, northwestward to US 81 at Selma, a total distance of approximately 46.2 miles.  (Bexar & Guadalupe Counties)  Section from SH 16 westward and northward approx. 19.9 miles transferred to FM 1604 and FM 2790.



Minute Order 072928, dated 06/30/1977; Adm. Ltr. 008-1977, dated 08/15/1977

From SL 1604, approximately 1.7 miles north of US 87, northward to FM 78, east of Randolph Air Force Base; and from another point on FM 78 at Schertz, northwestward to US 81 at Selma, a total distance of approximately 16.0 miles.  (Bexar & Guadalupe Counties)  New description; from SH 16 eastward and northeastward approx. 30.2 miles now a part of SL 1604.



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 UR 78 [FM 78] southeastward and southward to SL 1604, a distance of approx. 12.960 miles. (Bexar County)  Mileage from IH 35 southeastward to UR 78 [FM 78] transferred to UR 1518. ["Transferred" mileage, as noted on the Highway Designation File page for UR 1518, is approximately 3.655 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 1518: Any mileage that was previously described as "transferred to UR 1518" reverts back to FM 1518. This is retroactive to the date of passage of Minute Order 105686. The Highway Designation File page for UR 1518 has been removed.