Arizona State Route 80 Arizona State Route 80 State Route 80 (SR 80) is a roughly arc-shaped highway lying in southeastern Arizona that, with New Mexico's State Road 80, is a relic of the old U.S. Route 80, now truncated from San Diego to Dallas. This segment of old US 80 was not closely paralleled by Interstate 10, which lies to its north, and instead supplants the old and more direct (defunct in eastern Arizona) State Route 86. The route begins at an intersection with I-10 Bus. in Benson near an Amtrak station. The route heads south until it exits the city limit of
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