Alabama State Route 158

State Route 158 (SR 158) is a 21.44-mile-long (34.50 km) state highway in northern Mobile County in the southwestern corner of the U.S. state of Alabama. The western terminus of the highway is at an intersection with U.S. Route 98 (US 98) northwest of Wilmer, just shy of the Mississippi state line. The eastern terminus of the highway is at an intersection with U.S. Route 43 (US 43) at Saraland. The route will eventually be upgraded to a four-lane bypass of Semmes.