Last Driven September 2011 AMP: 252 Location: I-40 and Hipkoe Dr, Navajo Cty Reassurance shield that probably over-emphasizes SR 99 (Historic Photo: December 2010) AMP: 252 Location: I-40 and Hipkoe Dr, Navajo Cty As we head out of Winslow and the business loop ends and SR 99 joins, we’re 6 miles from the SR 99 split … Continue reading State Route 99, I-40/I-40 Bus/US-180 to I-40/US-180