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Interstate 19 is an intrastate interstate highway located entirely within the state of Arizona, United States. It goes from Nogales, Arizona at the Mexican border to Tucson, Arizona at Interstate 10.
Length
| Miles | km
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| 63.35 | 101.95 | Arizona
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| 63.35 | 101.95 | Total
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Major cities along the route
Intersections with other Interstates
Spur routes
None
- There are two Business Loops: One in Tucson, Arizona, and the other in Nogales, Arizona.
Exit guide
- 1B - Western Avenue (Nogales)
- 4 - Mariposa Road (Arizona State Highway 189) South
- 12 - Arizona State Highway 289
- 17 - Rio Rico Drive; Yavapi Drive
- 22 - Peck Canyon Road; Border Patrol Checkpoint
- 25 - Palo Parado Road
- 29 - Tumacacori National Historical Park; Carmen
- 34 - Tubac
- 40 - Chavez Siding Road (Tubac)
- 42 - Agua Linda Road
- 48 - Arivaca Road
- 53 - Rest Area
- 56 - Canoa Road
- 63 - Continental Road; Madera Canyon Recreation Area
- 65 - Esperanza Boulevard
- 69 - Business Loop 19 North; Duval Mine Road; Titan Missile National Historical Landmark
- 75 - Sahuarita
- 80 - Pima Mine Road
- 87 - Papago Road
- 92 - San Xavier Mission
- 95 - Pascua Yaqui Pueblo; Valencia Road; Tucson Airport
- 98 - Irvington Road
- 99 - Ajo Way; Old Tucson
- 101A - Interstate 10 East; El Paso
- 101B - Interstate 10 West; Phoenix
History
The entire route follows the routing of (former) U.S. Highway 89.
Notes
- Interstate 19 is unique amongst US Interstates, because signed distances are given in kilometers, and not miles. Speed limit signs are give speeds in miles-per-hour, however. According to the Arizona Department of Transportation, metric signage was originally placed because of the "metric system push" in the United States at the time of the original construction of the highway. Infrequently, re-signing the highway to miles is discussed, but the costs involved would be too high for a rural Interstate such as I-19.
- I-17 and I-19 could eventually join to become one longer interstate which would be renamed I-21.
- Nogales, Mexico is the only town on the U.S. - Mexico border, to have the same name as its U.S. counterpart. From the Arizona town to the Mexican one, I-19 becomes Mexico Highway 15.
- A recent reconstruction project at the Interstate's northern terminus with Interstate 10 in Tucson, Arizona (at the interchange commonly called "The Crossing") was begun in 2002 and completed in late 2004. [1] (http://www.1019crossing.com/)
References
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