State Route 148 or SR-148 is a 20.025-mile (32.227 km) state highway that serves as an east-west connection between Sylacauga and Millersville through Clay and Talladega Counties. SR-148 intersects SR-21 at its western terminus and SR-9 at its eastern terminus.

State Route 148 begins at its intersection with SR-21 in the central business district of Sylacauga. From this point, SR-148 follows a meandering easterly route through the Talladega National Forest in route to its eastern terminus at SR-9 in Millersville.