Business U.S. Highway 79-B begins at the intersection of mainline US 79 and SH 95 in southern Taylor. The business route travels northward along Main Street, concurrent with SH 95, and intersects FM 112. It then turns to the east along 4th Street to rejoin mainline US 79 at the city limits.
The business route through Taylor was originally designated in 1966 as Loop 427; by 1972, the route had been designated to serve as a full loop around the city. What is now currently mainline US 79 in southern Taylor was originally part of the loop route, and the designations would be switched in 1978. The designation was changed from Loop 427 in 1991, and the western segment along 2nd St was replaced with the segment concurrent with SH 95 in 2002.
Business U.S. Highway 79-F begins at US 79 in southeastern Henderson and travels northward along Jacksonville Drive and South Main Street. It turns eastward at its intersection with FM 13, briefly running concurrently with Bus. SH 64 along East Main Street. The route ends at US 79 / US 259 near Willow Lake; East Main Street continues past this intersection as FM 840.
Sections of roadway that are now Bus. US 79-F and Bus. SH 64-E were originally designated in 1944 as both Loop 153 and Loop 154. These designations were changed to the current business routes in 1991.
Business U.S. Highway 79-G travels through Carthage while mainline US 79 loops around the city to the north. The route begins at US 79 / SH 149 in eastern Carthage. The route travels eastward along Panola Street, passing Panola College and a junction with SH 315, before intersecting Bus. US 59 at a traffic circle. After leaving the traffic circle along Sabine Street, Bus. US 79-G continues eastward until it ends at a diamond interchange with US 79 / US 59.
Bus. US 79-G was designated in 1981 as Loop 334; it was the second route to bear that designation. The mileage was transferred to Bus. US 79-G in 1991.
In Homer, the U.S. Highway 79 Bypass begins at an intersection with US 79 and LA 9 south of the town. The bypass runs west of the town and overlaps LA 2 for about the last 1 1/2 miles before ending at US 79 north of town.
The route's southern terminus is at US 79 at the southern city limits of Magnolia. The route runs north as Jackson Street through residential areas until meeting Highway 19. The two routes begin a concurrency northbound towards downtown Magnolia where US 79B/Hwy. 19 both terminate at US 82B (E Main Street). This junction also serves as the southern terminus of Highway 355.
U.S. Route 79-B in Pine Bluff begins at I-530/US 65/US 79, southwest of Downtown. The highway runs east of the city center and north toward Altheimer. The highway meets its parent route before running through town and terminates north of town.