Highway Designation File

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


Certified Mileage (Open to Traffic)
71.386 2010

FARM TO MARKET ROAD NO. 378

Minute Order 021215, dated 06/16/1945 (date of agreement)

From Lorenzo to Robertson (Crosby County).  New Designation



Minute Order 022592, dated 10/14/1945 (date of agreement)

 From Cemetery north of Lorenzo via Lorenzo to Robertson (Crosby County).  Section north of Lorenzo added.



Exec. Ord. Cir. 024-1948,  dated 05/27/1948

From cemetery north of Lorenzo to junction with US 62 in Lorenzo and from another junction with US 62 near east city limits of Lorenzo southward to Robertson. (Crosby County)  Limits of SS 26 incorporated in this road.



Minute Order 027518, dated 09/28/1949

From approximately 11.0 miles north of Lorenzo, to US 62 in Lorenzo, and from another junction with US 62 near Lorenzo south via Robertson to a road intersection 3.0 miles south of Robertson, a total distance of approximately  21.3 miles. (Crosby County)  Extended northward from Cemetery north of Lorenzo 8.5 miles, and extended southward from Robertson 3.0 miles.



Adm. Ord., dated  01/14/1952

From a road intersection southward to US 62 in Lorenzo and from another point on US 62 at Lorenzo, southward to a road intersection 3.0 miles south of Robertson with a spur connection north of Lorenzo to Cemetery of approximately 0.2 mile, a total distance of approximately 21.1 miles. (Crosby County)  Description revised to include spur connection to Lorenzo Cemetery.



Minute Order 038822, Minute Order 038834, dated 09/21/1955, Adm. Cir. 041-1955, dated 10/15/1955

From FM 54 at Allman Gin, southward to US 62 in Lorenzo, and from another point on US 62 in Lorenzo southward to a road intersection 3.0 miles south of Robertson with a spur connection north of Lorenzo to Lorenzo Cemetery of approximately 0.2 mile, a total distance of approximately 27.0 miles.  (Floyd and Crosby Counties)  Extended approximately 5.9 miles eastward and Northward to FM 54.



Minute Order 046800, dated 11/24/1959, Adm. Auth., dated 12/21/1959, Adm. Auth., Adm. Cir. 015-1960, dated 01/15/1960

From SH. 86 approximately 7 miles west of Silverton, southward to SL 75 in Lockney, and from US 70 at Lockney, southward via Sand Hill and Allman Community to US 62 in Lorenzo, and from another point on US 62 in Lorenzo, southward to a road intersection approximately 3 miles south of Robertson, with spur connections as follows: (1) from a point approximately 3 miles south of the Briscoe-Floyd County Line east approximately 1.0 mile to Lone Star; (2) from a point north of Lorenzo west approximately 0.2 mile to cemetery; a total distance of approximately 72.6 miles. (Briscoe, Floyd, and Crosby Counties)  FM 598 canceled and combined, adding approximately 25.9 mile section of FM 1310 from Lorenzo southward to FM 784 transferred to this FM, adding approximately 10.3 miles section of FM 784 from present junction with FM 1310 southward to a point approximately  3 miles east of Hale County Line transferred  to this FM, adding approximately  5.3 miles.  New designation of approximately 4.2 miles from this point south to present northern terminus on FM 54.


Adm. Auth., dated 01/20/1964; Adm. Circ. 018-1964, dated 02/01/1964

From SH 86, 7 miles west of Silverton, southward to US 70 in Lockney, and from another point on US 70 in Lockney, southward via San Hill and Allman Community to US 62 in Lorenzo, and from another point on US 62 in Lorenzo, southward to a road intersection approximately 3 miles south of Robertson, with spur connections as follows: (1) From a point approximately 3 miles south of the Floyd-Briscoe County Line eastward approximately 1.0 mile to Lone Star; (2) From a point north of Lorenzo westward approximately 0.2 miles to cemetery, a total distance of approximately 72.9 miles. (Briscoe, Floyd and Crosby Counties) Section of SL 75 in Lockney from Shurbet Street southward approximately 0.3 miles along E. 8th St to US 70 transferred to this FM. System transfer.