Wyoming Highway 77

Wyoming Highway 77 (WYO 77) is a 22.18 mi long Wyoming state highway in northeastern Carbon County. The highway begins at WYO 487 and proceeds north, parallel to the highway, to a northern terminus at WYO 487.

Route description
Highway 77 begins at Highway 487, 22 mi north of Medicine Bow to Highway 487 near the Shirley Basin Rest Area, which is located 27 mi south of Highway 487's junction with Highway 220. Highway 77 stays to the west of Highway 487 and Shirley Basin, acting as an alternative route to Highway 487 between the two points. At its northern terminus, Highway 77 is about 48 mi south of the city of Casper.

The entirety of Highway 77 maintains a speed limit of 65 mph, and is closed during winters.