Wyoming Highway 12 is an east–west state route known as Herrick Lane. WYO 12 is located in Albany County west of Laramie

Wyoming Highway 12 travels from Wyoming Highway 130, five miles (8 km) west of Laramie near the Laramie Regional Airport west to an intersection with Albany County Route 57 (Mandel Lane) just past the junction with Interstate 80 (Exit 297). From there WYO 12 becomes Albany County Route 57 (Dutton Creek Road). Further west, CR 57 connects with I-80 again at Exit 290 (Quealy Dome) by the way of Albany CR 59 (Hunt Road), and at Exit 279 at the end of Dutton Creek Road. Mileposts along Highway 12 increase from east to west.

The entire route is in Albany County.