Last Driven July 2020 (Historic Photo: January 2010) AMP: 97 Location: WYO 220 and WYO 487, Natrona Cty Reassurance shield after the WYO 487 junction. WYO 220 is now carrying almost all traffic from Laramie to San Francisco that’s Casper bound, making this arguably the most important stretch of state highway in the state (definitely … Continue reading Wyoming Highway 220, WYO 487 to WYO 257