It connects U.S. Route 6 (US-6) in Lynndyl to US-89 at Pigeon Hollow Junction, crossing Interstate 15 (I-15) in Nephi.

The route starts in Millard County at US-6 in Lynndyl, north of Delta and south of Little Sahara Recreation Area, and travels east through Leamington before turning northeast and entering Juab County.

Leaving Nephi, the route enters Salt Creek Canyon, where it intersects the Nebo Loop Scenic Byway, before turning southeast, entering Sanpete County.

[6] State Route 148 was also formed at that time, connecting US-50 in Lynndyl to Leamington,[7] and two years later it was extended to meet SR-132 west of Nephi.

[9] SR-148 was removed from the state highway system in 1969,[10] and at the same time, SR-132 was extended east to Pigeon Hollow Junction, replacing part of SR-11.