AMP: 213 Location: SR 64 and US-180, Valle, Coconino Cty Reassurance shield as 180 joins 64. SR 64 is the dominant route here- we’ll use it’s mileposts. ADOT expanded 180 up this stretch to the park boundary only in the last 15 years or so, and it’s not even AASHTO approved yet AMP: 224 Location: … Continue reading U.S. Route 180, SR 64 to SR 64