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
Former state routes in Arizona 69 never extended south or east beyond the southern end of the Black Canyon Freeway, and T-69 never linked to Route 69. State Route 81 was a state highway in eastern Arizona that served Lyman Lake State Park from 1962–2003, traversing from its start at U.S. Route 180 / U.S. Route 191 between St. Johns and Springerville to Lyman Lake. The Arizona Department of Transportation turned the road over to the Arizona State Parks Department in June 2003 as it was contained within a state park. SR 81 was the shortest state highway in Arizona before State Route 280 was