Interstate 10 in Arizona 2013. The remainder of the old US 80 section was rebuilt to interstate standards, with completion in 2014. East of Tucson, I‑10 parallels and in some cases overlies old US 80 to Benson, and was originally co-signed as US 80 and SR 86. The section of I-10 from Valencia Road to Rita Road was the first construction project in the state of Arizona funded by the Federal Aid Highway Act of 1956. Construction began in 1957 and was completed in 1960. From Benson, the Interstate follows the Southern Pacific mainline east through Willcox and Bowie to New Mexico, rather than
Geronimo, Arizona until May 31, 1956. Geronimo, Arizona Geronimo is a populated place located on Highway 70 between Bylas and Fort Thomas west of Safford in Graham County, Arizona. Geronimo lies at an elevation of . Geronimo was named after the famous Apache chief Goyaalé, better known as Geronimo. Camp Thomas, the U. S. Cavalry began its management of the Apache Indian Reservation along the Gila River, was originally located here in 1876. The camp was later moved east to what is now Fort Thomas. Geronimo was once a stop on the Arizona Eastern Railway and had an operating US Post Office