Cienega Bridge

"Originally part of U.S. Route 80, a highway that once spanned Arizona’s length before the construction of Interstate 10, Ciénega train bridge is an open-spandrel train crossing erected in 1921. The oldest surviving bridge of its kind in Arizona, today it’s tucked behind I-10 on Marsh Station Road just east of Tucson. This area features views of the nearby Rincón Mountains and, of course, trains!"