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
Former state routes in Arizona 69 never extended south or east beyond the southern end of the Black Canyon Freeway, and T-69 never linked to Route 69. State Route 81 was a state highway in eastern Arizona that served Lyman Lake State Park from 1962–2003, traversing from its start at U.S. Route 180 / U.S. Route 191 between St. Johns and Springerville to Lyman Lake. The Arizona Department of Transportation turned the road over to the Arizona State Parks Department in June 2003 as it was contained within a state park. SR 81 was the shortest state highway in Arizona before State Route 280 was