WYO 22 used to connect to former Alternate US 20, which began at U.S. Highway 20 in Sugar City, Idaho, following Idaho State Highway 33 until the state line, then connected with WYO 22.
WYO 22 used to be part of a road network that connected to former Alternate US 20, which began at U.S. Highway 20 in Sugar City, Idaho, along Idaho State Highway 33 until the state line, and then merged with WYO 22.