Interstate 40 in Arizona Interstate 40 in Arizona Interstate 40 (I-40) is an east–west Interstate Highway that has a section in the U.S. state of Arizona, connecting sections in California and New Mexico. The section throughout Arizona is also known as the Purple Heart Trail. It enters Arizona from the west at a crossing of the Colorado River southwest of Kingman. It travels eastward across the northern portion of the state connecting the cities of Kingman, Ash Fork, Williams, Flagstaff, Winslow, and Holbrook. I-40 continues into New Mexico, heading to Albuquerque. The highway has major junctions with U.S. Route 93 (US 93) — the
Unconstructed state routes in Arizona planning maps and all land acquired for right-of-way was subsequently sold, the funds being used to pay for other transportation projects. State Route 76 was a proposed state highway in eastern central Arizona, United States that would have connected State Route 77 and San Manuel. There was a planned extension to Benson which would have been State Route 176. It was designated in 1962 but was never built, and was cancelled in 1988. It would have followed the San Pedro River on its entire length. U.S. Route 93T was a proposed temporary extension of US 93 following US 66 and