State Route 118 (SR-118) is a state highway in the northwestern part of the U.S. state of Alabama. It is a 57.4-mile-long (92.4 km) route. Prior to the completion of sections of Interstate 22 (I-22), SR-118 served only as the unsigned partner route of U.S. Route 278 (US-278) between the Mississippi state line, west-southwest of Sulligent, and Guin. As new sections of I-22 have opened, US-78 has been rerouted onto the new limited-access highway, and the old sections of US-78 have been designated as SR-118, thus extending the route eastward by nearly 40 miles (64 km). The current eastern terminus of the route is in the western part of Jasper, at the junction with SR-69.