Last Driven May 2015 (Historic Photo: November 2009) AMP: 58 Location: I-25 and WYO 321, Chugwater Reassurance shield after the 321 split (Historic Photo: November 2009) AMP: 55 Location: I-25 and Iron Mountain Rd, Chugwater Exit for WYO 321 and WYO 211. WYO 211 runs for roughly a mile before running into a really long physical gap, so it’s … Continue reading U.S. Route 87, WYO 321 to WYO 211/WYO 321