ADOT improvements to State Route 189
As part of Arizona's key north-south trade corridor, improvements to State Route 189 in Nogales, Ariz., have strong support from the PAG region and well beyond. The Arizona Department of Transportation, or ADOT, is submitting a competitive grant application (USDOT TIGER program) to help advance funding for this nationally significant transportation project.
SR 189 is adjacent to Arizona’s highest volume international land port of entry, serving as a critical gateway with our state's top international trading partner, Mexico. At the terminus of SR 189, the Mariposa Land Port of Entry at the United States-Mexico border connects to Mexico Highway 15 which follows the West Coast all the way to Mexico City. On the U.S. side, SR 189 connects to Interstate 19, which is not only a segment of the CANAMEX Corridor, it is also a segment of future Interstate 11. Both are High Priority Corridors of the National Highway System.
If constructed, ADOT’s SR 189 project would improve commercial vehicle throughput at the 1-19/SR 189 interchange while also addressing mobility, access and safety issues along the remainder of the approximately 4-mile SR 189 corridor.