AMP: 2 Location: W 1st St and Poplar St, Casper Reassurance shield after the WYO 220 junction AMP: 1 Location: W 1st St and Center St, Casper In downtown Casper we come to a junction with I-25/US-87 Business. You’ll turn left to follow those north towards I-25, and stay straight to follow them south. The … Continue reading U.S. Route 26 Business, WYO 220 to I-25 Bus/US-87 Bus