Arizona State Route 189

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State Route 189 marker

State Route 189
Mariposa Road
Route information
Maintained by ADOT
Length: 3.75 mi[1] (6.04 km)
Existed: 1956 – present
Major junctions
South end: Fed. 15D at Mexican border in Nogales
  I-19 in Nogales
North end: I-19 BL in Nogales
Highway system
SR 188 US 191

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 north–south route for its entirety.

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.

Route description[edit]

SR 189 is a 3.75-mile (6.04 km) state highway that is completely within the city limits of Nogales. The southern terminus is located at the Mexico border. From the border, the highway heads north before curving towards the east to an interchange with I-19. SR 189 continues east from the interchange to its northern terminus at the I-19 Business Route. It also serves as a bypass route for truck traffic to and from Mexico, avoiding the busier border crossing at North Grand Ave in central Nogales.[1][2]


The route was originally established as a state highway in 1956, from Interstate 19 in Nogales to U.S. Route 89. In 1974, the route was formally established in the city of Nogales with its current routing from the Mexican border to I-19 Business.[3]

Junction list[edit]

The entire route is in Nogales, Santa Cruz County.

mi[1] km Destinations Notes
0.01 0.016 Fed. 15D south Southern terminus; United States-Mexico border; continues south as Mexican Federal Highway 15D (toll)
2.97 4.78 I-19 – Nogales, Tucson I-19 exit 4
3.75 6.04 I-19 BL (Grand Avenue) Northern terminus; continues east as Calle Sonora
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


Route map: Bing / Google

KML is from Wikidata
  1. ^ a b c Arizona Department of Transportation. "2008 ADOT Highway Log" (PDF). Retrieved 2008-04-09. 
  2. ^ Google (April 17, 2008). "overview map of SR 189" (Map). Google Maps. Google. Retrieved April 17, 2008. 
  3. ^ Arizona Department of Transportation. "ADOT Right-of-Way Resolutions 1956-P-260, 1966- -041, 1974-09-A-027". Retrieved February 2, 2011.