Arizona State Route 64 a route from Williams to the Grand Canyon. In 1935, the highway was extended to the east from the Grand Canyon to US 89. In 1961, the highway was extended further east from US 89 through Tuba City to the New Mexico state line. In 1965, the portion from Teec Nos Pos was renumbered to SR 504 to match New Mexico, which would be renumbered again in 1987 to US 64. In 1965, the section to the east of US 89 became US 164, and would later be renumbered to US 160 in 1969. Arizona State Route 64 State Route
Unconstructed state routes in Arizona planning maps and all land acquired for right-of-way was subsequently sold, the funds being used to pay for other transportation projects. State Route 76 was a proposed state highway in eastern central Arizona, United States that would have connected State Route 77 and San Manuel. There was a planned extension to Benson which would have been State Route 176. It was designated in 1962 but was never built, and was cancelled in 1988. It would have followed the San Pedro River on its entire length. U.S. Route 93T was a proposed temporary extension of US 93 following US 66 and