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
White River (Arizona) White River (Arizona) The White River is a tributary of the Salt River in the U.S. state of Arizona. Formed by two forks that drain part of the White Mountains, it begins in Navajo County and ends in Gila County, where it meets the Black River to form the Salt River. The White River lies entirely within the Fort Apache Indian Reservation in the east-central part of the state. The North Fork White River and the East Fork White River merge near Fort Apache to form the main stem, which continues generally southwest to its confluence with the Black River.