On September 29, 1948, another section of FM 179 from SH 137 at Welch southeast 7.8 miles (12.6 km) to 1 mile north of Grandview school was created, creating a gap.

The highway intersects with FM 2592 (North 22nd Street) before leaving the town and traveling through rural Dawson County.

FM 179 leaves Lubbock and runs through an unincorporated area of the county before entering the town of Shallowater.

The highway runs concurrently with US 84 before returning to a separate routing.

FM 179 runs through rural western Hale County before ending at an intersection with SH 194 northwest of Plainview.