US 68 and KY 80 continue east on the Russellville Bypass, intersect at grade the Russellville–Lewisburg R.J. Corman rail spur, and intersect KY 3519, which heads north as Lewisburg Road and south as Main Street. The bypass crosses the Town Branch of the Mud River, intersects KY 79 (Morgantown Road), and intersects at grade the R.J. Corman rail line. US 68 and KY 80 curve south to the bypass's intersection with Bowling Green Road, onto which US 68 and KY 80 split east toward Auburn and Bowling Green and on which US 68 Bus. heads west toward downtown Russellville. This intersection serves as the northern terminus of US 79, which heads south on its own on the bypass. The highway meets the west end of KY 100 (Franklin Road), which leads to Russellville-Logan County Airport, and curves southwest and west toward Nashville Road, which carries US 431 heading south toward Adairville and Nashville and KY 2146 north toward downtown Russellville; US 431 joins US 79 on the bypass heading west. The two U.S. Highways intersect KY 96 (Orndorff Mill Road) and curve northwest. The bypass passes Russellville High School and crosses Town Branch before completing the loop at Clarksville Road, where US 79 splits southwest from the bypass.
