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
Former state routes in Arizona from its junction with Interstate 8 in Yuma to the Interstate 8 business loop (which was up until 1977, US 80). The route was turned over to the city of Yuma on April 20, 2007 for maintenance. The road is now Avenue 3E, yet signage for SR 280 remains, including exit signs for Avenue 3E on Interstate 8. SR 280 was the shortest state highway in Arizona, . It existed wholly within the city of Yuma and served the Yuma International Airport. State Route 360 was a state route located in the Phoenix, Arizona area of the United States. From