Wyoming Highway 255 (WYO 255) is a short 0.48-mile-long (0.77 km) unsigned[3] Wyoming state road in the City of Casper known as N. Center Street.

[4] Wyoming Highway 255 begins its southern end at US 20 Business/US 26 Business (E 1st St./W 1st St.) in Casper and I-25 Business/US 87 Business which will join 255 from the east.

[5] Highway 255 travels north for just under a half-mile as N. Center Street for 0.48 miles (0.77 km) to an end at I-25/US 20/US 26/US 87 at Exit 188A.

continue after Wyoming Highway 255 ends at its southern terminus by joining US 20 BUS/US 26 Bus.

[2] The entire route is in Casper, Natrona County.