The highway then has an interchange with I-65 (Exit 27) before winding its way hilly terrain to enter Cornersville and coming to an intersection with US 31A/SR 11.

The highway crosses into Lincoln County in downtown at the split with SR 130.

It then begins winding its way through hilly terrain to have a short concurrency with US 231/SR 10 along the Lincoln-Moore county line.

The highway then crosses fully into Moore County and winds its way east through hills before entering Lynchburg and coming to an end at an intersection with SR 55 in the southern part of town.

The entire route of SR 129 is a two-lane rural highway.