Business Loop I-19 - Nogales

Old U.S. 89 north at Business Loop I-19 in Downtown Nogales — Old U.S. 89 links the Mexican border crossing with Business Loop I-19 in Downtown Nogales. U.S. 89 was truncated from Nogales north to Flagstaff in 1992. 04/26/17

Business Loop I-19 begins at the international border crossing of Grand Avenue, 0.15 miles south of the Interstate 19 end at Crawford Street. The route partitions into a couplet of Grand Avenue north and Arroyo Boulevard south between I-19 and North Terminal Street. Beyond the separation, Grand Avenue (old U.S. 89) continues north as a five lane, mostly commercial boulevard throughout the city of Nogales. The 5.71 mile long route concludes at a wye interchange (Exit 8) with Interstate 19.

Updated August 4, 2026