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
Arizona State Route 260 eastern Rim. It is also closed during winter storms because of its elevation changes between Payson and Show Low. SR 260 was originally designated in 1955 as SR 160 from Payson to Show Low. In 1969, US 160 extended into Arizona, so SR 160 was renumbered to SR 260 to avoid confusion. In 1972, it extended east to Eagar, replacing SR 173 and part of SR 73. On December 15, 1989, SR 260 extended west to Cottonwood over SR 279. Arizona State Route 260 State Route 260, also known as SR 260, is a major east–west state highway in north-central