Arizona State Route 189
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| Basic data | |
| Overall length: | 3.75 mi / 6.04 km |
| Starting point: | mexican border |
| End point: |
 I-19 Business in Nogales
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| County: | Santa Cruz County |
Arizona State Route 189 is a highway in the US state of Arizona that runs in a north-south direction.
The highway begins on the border with Mexico and ends in Nogales on Interstate 19 Business. The State Route is used as a bypass route around Nogales and the city's overflowing border crossing. Just before the north end, it meets Interstate 19 .