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I-19 Shield

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.


Length: 63 miles (101 kilometers)
Existed since: 1963
Current Route: Business Loop 19 in Nogales to I-10 in Tucson
Major Junctions: AZ 189, AZ 289, AZ 86, I-10


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.

Historic US 80
10/8/2021 - Sign informing drivers of metric signage on I-19.

Interstate 19 is one of the few remaining highways in Arizona with call boxes on it; unlike California which still has many everywhere.

Historic US 80
10/8/2021 - Advance signage for an emergency call box on I-19.

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.

Historic US 80
10/8/2021 - Beginning of BL 19 North in Nogales.

Pictures


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 SOUTH
Mariposa Rd
SOUTH
Mariposa Rd
BORDER TRUCK ROUTE
8
Grand Ave
TO EAST
Patagonia
Sonoita
LEFT EXIT
12 WEST
Ruby 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 WEST
Ajo Way
WEST
Ajo Way
Desert Museum
Old Tucson
Desert Museum
Old Tucson
101 EAST
El Paso
102 29th St - 22nd St
Silverlake Rd
Starr Pass Blvd
WEST
Phoenix

Page last updated: 4/22/2022