Arizona State Route 189

State Route 189 (SR 189) is a highway in Santa Cruz County, Arizona that runs from its junction with Interstate 19 to the US-Mexico Border. It is a northsouth route for its entirety.

State Route 189

Mariposa Road
SR 189 highlighted in red
Route information
Maintained by ADOT
Length3.75 mi (6.04 km)
Existed1956–present
Major junctions
South end Fed. 15D at Mexican border in Nogales
Major intersections I-19 in Nogales
North end BL 19 in Nogales
Location
CountryUnited States
StateArizona
Highway system
  • Arizona State Highway System
  • Interstate
  • US
  • State
  • Proposed
  • Former
SR 188 US 191

The highway is a portion of, and the southern terminus of the United States section of the CANAMEX Corridor, a trade corridor that stretches north from Mexico across the United States to the Canadian province of Alberta.

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