U.S. Route 66 in Arizona U.S. Route 66 in Arizona U.S. Route 66 (US 66, Route 66) covered as part of a former United States Numbered Highway in the state of Arizona. The highway ran from west to east, starting in Needles, California, through Kingman and Seligman to the New Mexico state line as part of the historic US 66 from Santa Monica, California, to Chicago, Illinois. The highway was decommissioned in 1985, although portions remain as State Route 66 (SR 66). In 1914 the road was designated National Old Trails Highway; in 1926 it was re-designated US 66 with the birth of the U.S.
Former state routes in Arizona Former state routes in Arizona Below is a list and summary of the former state highways. State Route 62 was a state highway in northwestern Arizona running a total of from US 93, north of Kingman to the mining town of Chloride. The road first appeared on a 1936 map and it was deleted from the state highway system in 1971 because of the closure of the mine in Chloride. The road is still in use today as a county route. State Route 63 was a state highway in northeastern Arizona. The route first appeared on a state map in