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 fact a business loop for U.S. Route 89 through the town of Page, Arizona. It did not intersect SR 89. Moreover, it was the only Arizona state highway known to have used the "L" suffix. SR 89L was removed from the state highway system in 2005. State Route 93 was a state highway in Arizona that existed from 1946 to 1985. The route was cosigned with other highways along nearly all of its route from Kingman to the border at Nogales. State Route 93 was the original designation for the highway from Kingman to Wickenburg, which was built in 1946.