State Route 189

Arizona State Route 189

Arizona State Route 189 constitutes a 3.76 mile long route in Nogales connecting Business Loop I-19 (Grand Avenue) and Interstate 19 to the Mexican Border. This road was built as a connector to a new Border Crossing built by Mexico in the early 1970s at Nogales. Historically the alignment of State Route 189 was evaluated as a potential route for Interstate 19.

Addressing increasing truck traffic along the route, the Arizona Department of Transportation (ADOT) commenced a $138 million project along SR 189 in 2020. Completed in Fall 2021, construction widened SR 189 from just north of the Mariposa Port of Entry to Grand Avenue, added a roundabout at SR 189 and Target Range Road, and built flyovers linking SR 189 north with I-19 north and I-19 south to SR 189 south.

References:

  1. Ramping Up for the Future - State Route 189: International Border at Grand Avenue. Arizona Department of Transportation (ADOT), news letter. August 2021, Vol. 2 No. 4.

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Page Updated Monday April 18, 2022.