[I-19]

Current route in Arizona: Mexican border at Nogales to JCT I-10 at Tucson
Length: 101 km

Junctions: AZ 189, AZ 289, AZ 86, I-10


I-19 is one of the two Interstates in Arizona that don't go between US states. It does, however, go between countries. I-19 connects the major border crossing at Nogales with I-10.

[Business I-19]
I-19 replaced the southmost section of US 89. After US 89 was decertified in 1992, the remaining stand-alone portions became Business Loop I-19. The northern leg, from Tucson to Green Valley, lost its Business Loop designation in 2003. The section in Nogales is still active.


[I-19/I-10 interchange diagram]
This 1957 design (Illustration: ADOT) of the I-10/I-19 interchange was constructed in 1963. In 2002, ADOT reconstructed it it to eliminate the loop ramp and increase capacity.

Note that this diagram calls them by their pre-Interstate numbers, AZ 84 and US 89.


[This Highway Signed in Metric] [km 94 post] [San Xavier Rd. 2km]
[Road Signing Next 59 Miles] [Milepost 58]
Well, almost. In addition to the metric signage, there are mileposts and MPH speed limit signs. (The latter don't specify the units.) The mixed kilometer/mileposts are going to be confusing.

ADOT kept the metric signs during the resigning project. (By the way, how does Mexico feel about ADOT resigning one mile of their highway?)

[milepost]
Ronald J. Wysocki informs me as of early August 1998, the milepost signs have been turned 90° to the highway, so that they are not readily visible.

As of 2007, the future of the metric signage is uncertain. ADOT may changed them to imperial measurements when the signs are next replaced.


[Strange lights] [Push button for bus]
Most of the southern exits on I-19 have a pole with a pair of lights like these, either on a wooden telephone pole or a light pole. These are industrial white globe lights, not standard traffic signal lights. The button is located on a pole by the intersecting street. I don't know what bus service uses them.


[Call box]
Unlike California, only a few miles of highways have call boxes on them. I-19 has most (all?) of them. AZ 51 in metro Phoenix had them at one time, but they were removed.


[Titan Missile silo control room]

"Turn your key, sir!" The Titan Missile Silo, at exit 69.


Click the name of an attraction to visit it
Exit numbers are based on kilometerposts

I-19 EXIT LIST
EXIT NORTHBOUND EXITS
Read down
SOUTHBOUND EXITS
Read up
0 SPEED LIMIT 45 SPEED LIMIT 25
0 Downtown
International Border
FREEWAY ENDS
1A International St
1 SPEED LIMIT 55 SPEED LIMIT 45
1B Western Ave Western Ave
2 SPEED LIMIT 65 SPEED LIMIT 55
3 SPEED LIMIT 75 SPEED LIMIT 65
4 [AZ 189] SOUTH
Mariposa Rd
[AZ 189] SOUTH
Mariposa Rd
BORDER TRUCK ROUTE
8 [BL-19]
Grand Ave
TO [AZ 82] EAST
Patagonia
LEFT EXIT
12 [AZ 289]
Ruby Rd
Nogales Ranger Station
[AZ 289]
Ruby Rd
Nogales Ranger Station
Pena Blanca Lake
Recreation Area
Pena Blanca Lake
Recreation Area
17 Rio Rico Dr
Yavapi Dr
Rio Rico Dr
Yavapi Dr
22 Peck Canyon Rd Peck Canyon Rd
BORDER PATROL CHECKPOINT
25 Palo Parado Rd
Palo Parado Rd
29 Tumacacori
Carmen
Tumacacori
Carmen
Tumacacori National
Historical Park
Tumacacori National
Historical Park
34 Tubac Tubac
Tubac Presidio State
Historic Park
Tubac Presidio State
Historic Park
40 Chavez Siding Rd
Tubac
Chavez Siding Rd
Tubac
42 Agua Linda Rd Agua Linda Rd
48 Arivaca Rd Arivaca Rd
53 Rest Area Rest Area
56 Canoa Rd Canoa Rd
63 Continental Rd Continental Rd
Madera Canyon
Recreation Area
Madera Canyon
Recreation Area
65 Esparanza Blvd Esparanza Blvd
69 Duval Mine Rd
Duval Mine Rd
Titan Missile Natl
Historical Landmark
Titan Missile Natl
Historical Landmark
75 Sahuarita Rd
Sahuarita
Sahuarita Rd
Sahuarita
80 Pima Mine Rd Pima Mine Rd
87 Papago Rd Papago Rd
87 SPEED LIMIT 65 SPEED LIMIT 75
92 San Xavier Rd San Xavier Rd
San Xavier Mission San Xavier Mission
92 SPEED LIMIT 55 SPEED LIMIT 65
95 Pascula Yaqui Pueblo
Valencia Rd
Tucson Airport
Pascua Yaqui Pueblo
Valencia Rd
Tucson Airport
98 Irvington Rd Irvington Rd
99 [AZ 86]
Ajo Way
[AZ 86]
Ajo Way
Desert Museum
Old Tucson
Desert Museum
Old Tucson
101 [I-10] EAST
El Paso
102 27th St - 29th St
Star Pass Blvd
Silverlake Rd
[I-10] WEST
Phoenix
101 SPEED LIMIT 55 SPEED LIMIT 55
EXIT NORTHBOUND EXITS
Read down
SOUTHBOUND EXITS
Read up

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Return to Arizona Roads

Last updated 11/17/2007