Interstate 19
Interstate 19 is one of the Interstates in Arizona that does not go between states. However, I-19 does connect the U.S. to Mexico. I-19 goes from Tucson to Nogales. The Interstate replaced the southernmost segment of US 89.
Cool Features
Interstate 19 is the only Interstate in the U.S. that uses the metric system on its signage. Metric was used on I-19 because at the time of it being built, there was a push in the U.S. to convert to metric.
Interstate 19 is one of the few remaining highways in Arizona with call boxes on it; unlike California which still has many everywhere.
Related Routes
Business Loop 19
Interstate 19 has one current business loop in Nogales. It runs from the international border with Mexico along Grand Avenue and ends at I-19 in the north at Exit 8. Formerly, there was also a business loop in Tucson. Since 2004 however, it has been decommissioned. It ran from I-19 at Exit 69 in Green Valley along Nogales Highway where it ended at I-10 at Exit 261 in South Tucson.
Pictures
12/19/2020 - Interstate 19 North @ Drexel Rd
12/19/2020 - Interstate 19 North @ Ajo Way exit
10/8/2021 - Beginning of Interstate 19 South - Tucson
10/8/2021 - South end of Interstate 19 @ I-19 BL (Grand Ave) - Nogales
10/8/2021 - Beginning of Interstate 19 North @ Arizona Welcome Sign - Nogales
10/8/2021 - Interstate 19 North, just north of Palo Parado Rd - Tumacacori
3/15/2023 - Interstate 19 South, south of San Xavier Rd - San Xavier Indian Reservation
3/15/2023 - Interstate 19 South, north of Esperanza Blvd - Green Valley
Exit List
| Exit/ km |
Northbound Exits Read down |
Southbound Exits Read up |
|---|---|---|
| 0 | FREEWAY ENDS | |
| 1A | International St | |
| 1 | Western Ave | |
| 1B | Western Ave | |
| 4 |  SOUTHMariposa Rd |
SOUTH Mariposa Rd |
| BORDER TRUCK ROUTE | ||
| 8 |  Grand Ave TO  EASTPatagonia Sonoita |
|
| LEFT EXIT | ||
| 12 |  WESTRuby Rd Nogales Ranger Sta |
WEST Ruby Rd Nogales Ranger Sta |
| Pena Blanca Lake Recreational Area |
Pena Blanca Lake Recreational Area |
|
| 17 | Rio Rico Dr Yavapai Dr |
Rio Rico Dr Yavapai Dr |
| 22 | Peck Canyon Rd | Peck Canyon Rd |
| 25 | Palo Parado Rd | Palo Parado Rd |
| 29 | Tumacacori Carmen |
Tumacacori Carmen |
| Tumacacori Natl Historical Park |
Tumacacori Natl Historical Park |
|
| 34 | Tubac | Tubac |
| Tubac Presidio State Hist Park |
Tubac Presidio State Hist Park |
|
| 40 | Chavez Siding Rd | Chavez Siding Rd |
| 42 | Agua Linda Rd | Agua Linda Rd |
| 48 | Arivaca Rd | Arivaca Rd |
| ENTERING Pima County |
ENTERING Santa Cruz County |
|
| 53 | Rest Area | Rest Area |
| 56 | Canoa Rd | Canoa Rd |
| 63 | Continental Rd | Continental Rd |
| Madera Canyon Recreational Area |
Madera Canyon Recreational Area |
|
| 65 | Esperanza Blvd | Esperanza Blvd |
| 69 | Duval Mine Rd | Duval Mine Rd |
| Titan Missle Natl Historic Landmark | Titan Missle Natl Historic Landmark | |
| 75 | Sahuarita Rd | Sahuarita Rd |
| 80 | Pima Mine Rd | Pima Mine Rd |
| EXIT 25 MPH | ||
| 87 | Papago Rd | Papago Rd |
| 92 | San Xavier Rd | San Xavier Rd |
| EXIT 25 MPH | ||
| San Xavier Mission | San Xavier Mission | |
| 95 | Valencia Rd Tucson Airport |
Valencia Rd Tucson Airport |
| 98 | Irvington Rd | Irvington Rd |
| 99 |  WESTAjo Way |
WEST Ajo Way |
| Desert Museum Old Tucson |
Desert Museum Old Tucson |
|
| 101 |  EASTEl Paso |
|
| 102 | 29th St - 22nd St Silverlake Rd Starr Pass Blvd |
|
| WEST Phoenix |
Page last updated: 3/15/2023