Last Driven March 2021 (Historic Photo: May 2012) AMP: 556 Location: US-89 at the Utah Line, Coconino Cty US-89 enters Arizona just after Lake Powell. The route once went all the way to Nogales, but now just heads to Flagstaff. AMP: 556 Location: US-89 at the Utah Line, Coconino Cty Reassurance shield as we enter … Continue reading U.S. Route 89, UT State Line to SR 98