Business Loop I-10 - West Tucson

Former Business Loop I-10 through central Tucson was decommissioned from the state highway system at some point in the late 1990s. Prior to its elimination, shield assemblies posted for Business Loop I-10 alluded to U.S. 89, which was dropped south of Flagstaff in 1992.

The business route zigzagged southeast from Exit 255 along SR 77 (West Miracle Mile) east, Oracle Road (old U.S. 80/89) south, Speedway Boulevard east and Stone Avenue south to Downtown Tucson. A couplet separated traffic between South Stone and Sixth Avenues to 18th Street, where Sixth Avenue (old U.S. 89) switched to two way traffic en route to Interstate 10 at Exit 261. Business Loop I-10 ended opposite the southbound beginning of another decommissioned route, Business Loop I-19.