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 1932 running through the Petrified Forest National Park east of Winslow between then U.S. Route 66 and U.S. Route 260. The road was decertified in 1951 and is now maintained by the National Park Service. SR 63 then appeared again on a state map in 1961 along a route from U.S. Route 66 in Sanders northwest 15 miles. In 1970, it extended north to then U.S. 164. The route disappeared on maps on May 11, 1981 when the route became U.S. Route 191 and US 164 became U.S. Route 160. State Route 65 was a state highway in northern Arizona