Road Information

Total Mileage in State: 101 kilometers
Northern End: At I-10, in Tucson
Southern End: Near Mexican border, in Nogales
Mileage covered in Photos: 101 kilometers
Counties covered in Photos: Santa Cruz, Pima
Major Junctions in Photos: AZ 189, in Nogales
AZ 86, in Tucson
I-10, in Tucson
Control Cities in Photos: Nogales, Rio Rico, Green Valley, Sahuarita, Tucson

Northbound

   

As Interstate 19 North begins in Nogales, the speed limit starts out at 55 mph.  (Photo taken 5/20/15).

Arizona welcome sign on Interstate 19 North in Nogales for those folks who just crossed the border from Mexico.  (Photo taken 5/20/15).

Interstate 19 North at Exit 1: Western Ave  (Photo taken 5/20/15).

Interstate 19 North at kilometer marker 2. I-19 is the only Interstate in the country to be marked by the kilometer rather than by the mile. Its exits are numbered by the kilometer accordingly.  (Photo taken 5/20/15).

Interstate 19 North assurance shield near kilometer marker 3.  (Photo taken 5/20/15).

The speed limit increases to 75 mph near kilometer marker 3. Although I-19 is (Photo taken 5/20/15).marked by the kilometer, its speed limits are still based on miles per hour.  (Photo taken 5/20/15).

Interstate 19 North at Exit 4: AZ 189 South - Mariposa Rd  (Photo taken 5/20/15).

Another speed limit sign at kilometer marker 6. Speed Limit - 75 mph, which is the standard on most rural stretches of Interstate in Arizona.  (Photo taken 5/20/15).

Interstate 19 North at kilometer marker 8. The reason for I-19 being marked by the kilometer is because there was a push to switch the Interstate system to all metric in the U.S. years ago, near the time when I-19 was planned and finished.  (Photo taken 5/20/15).

Take Exit 12 to Pena Blanca Lake Recreational Area.  (Photo taken 5/20/15).

Take Exit 12 to Nogales Ranger Station and Pena Blanca Lake.  (Photo taken 5/20/15).

Take Exit 12 to Ruby Rd and Nogales Ranger Station. These signs for Exit 12 are getting a little repetitive, aren't they?  (Photo taken 5/20/15).

Interstate 19 North at Exit 12: AZ 289 West - Ruby Rd  (Photo taken 5/20/15).

Interstate 19 North assurance shield north of Exit 12.  (Photo taken 5/20/15).

Sign listing the distances to the upcoming exits to Rio Rico.  (Photo taken 5/20/15).

Take either of the next 2 exits to Rio Rico.  (Photo taken 5/20/15).

Interstate 19 North: Road view from kilometer marker 15.  (Photo taken 5/20/15).

Interstate 19 North at Exit 17: Rio Rico Dr / Yavapai Dr  (Photo taken 5/20/15).

Speed Limit assurance sign on Interstate 19 North. Speed Limit - 75 mph.  (Photo taken 5/20/15).

Distance sign on Interstate 19 North. It's 10 kilometers to Tumacacori, 46 kilometers to Green Valley, and 84 kilometers to Tucson.  (Photo taken 5/20/15).

Interstate 19 North at kilometer marker 20.  (Photo taken 5/20/15).

Interstate 19 North at Exit 22: Peck Canyon Rd  (Photo taken 5/20/15).

Interstate 19 North at Exit 25: Palo Parado Rd  (Photo taken 5/20/15).

Interstate 19 North: Road view from kilometer marker 26.  (Photo taken 5/20/15).

View on Interstate 19 North near kilometer marker 28.  (Photo taken 5/20/15).

Take Exit 29 to Tumacacori National Historical Park.  (Photo taken 5/20/15).

Interstate 19 North at Exit 29: Tumacacori / Carmen  (Photo taken 5/20/15).

Interstate 19 North at kilometer marker 30.  (Photo taken 5/20/15).

Interstate 19 North approaching Exit 34 - 2 kilometers.  (Photo taken 5/20/15).

Take Exit 34 to Tubac Presidio State Historic Park.  (Photo taken 5/20/15).

Interstate 19 North at Exit 34: Tubac  (Photo taken 5/20/15).

Interstate 19 North at kilometer marker 36.  (Photo taken 5/20/15).

Distance sign near kilometer marker 36.5. It's 4 kilometers to Amado, 29 kilometers to Green Valley, and 67 kilometers to Tucson.  (Photo taken 5/20/15).

Interstate 19 North approaching the Border Patrol Check Point - 2 miles. That's right, they went with miles for this sign.  (Photo taken 5/20/15).

As you begin to approach the Border Patrol Checkpoint, the speed limit decreases to 65 mph.  (Photo taken 5/20/15).

Interstate 19 North at Exit 40: Chavez Siding Rd  (Photo taken 5/20/15).

This sign lists the distances to the two upcoming exits to Amado.  (Photo taken 5/20/15).

At kilometer marker 40, the speed limit decreases to 45 mph as we near the Border Patrol Checkpoint.  (Photo taken 5/20/15).

As the Border Patrol Checkpoint comes into view, the speed limit decreases even further to 25 mph.  (Photo taken 5/20/15).

Prepare to stop ahead at the checkpoint.  (Photo taken 5/20/15).

All traffic must stop at Border Patrol.  (Photo taken 5/20/15).

As a courtesy to those in front of you and the Border Patrol officers, motorists are advised to use their low beams.  (Photo taken 5/20/15).

Interstate 19 North approaching the Border Patrol Checkpoint.  (Photo taken 5/20/15).

Interstate 19 North at the Border Patrol Checkpoint, near kilometer marker 41.  (Photo taken 5/20/15).

Once through the checkpoint, the standard speed limit of 75 mph resumes.  (Photo taken 5/20/15).

Interstate 19 North at Exit 42: Agua Linda Rd  (Photo taken 5/20/15).

Interstate 19 North at Exit 48: Arivaca Rd  (Photo taken 5/20/15).

Interstate 19 North entering Pima County.  (Photo taken 5/20/15).

Interstate 19 North assurance shield.  (Photo taken 5/20/15).

Distance sign near kilometer marker 51. It's 3 kilometers to the upcoming Rest Area, 15 kilometers to Green Valley, and 53 kilometers to Tucson.  (Photo taken 5/20/15).

Interstate 19 North at kilometer marker 52.  (Photo taken 5/20/15).

Interstate 19 North at the Rest Area located near kilometer marker 53.  (Photo taken 5/20/15).

Interstate 19 North at kilometer marker 54.  (Photo taken 5/20/15).

Take any of the next 4 exits to Green Valley.  (Photo taken 5/20/15).

Interstate 19 North at Exit 56: Canoa Rd  (Photo taken 5/20/15).

Distance sign near kilometer marker 57. It's 8 kilometers to Green Valley, 44 kilometers to the junction of Interstate 10, and 45 kilometers to Tucson.  (Photo taken 5/20/15).

This sign lists the distances to the three remaining exits to Green Valley.  (Photo taken 5/20/15).

At kilometer marker 62, the speed limit decreases to 65 mph as you pass through Green Valley.  (Photo taken 5/20/15).

Take Exit 63 to Madera Canyon Recreational Area and Arizona Tourist Info.  (Photo taken 5/20/15).

Interstate 19 North at Exit 63: Continental Rd  (Photo taken 5/20/15).

Interstate 19 North at Exit 65: Esperanza Blvd  (Photo taken 5/20/15).

Interstate 19 North at kilometer marker 67.  (Photo taken 5/20/15).

Take Exit 69 to Titan Missile National Historic Landmark.  (Photo taken 5/20/15).

Take any of the next 3 exits to Sahuarita.  (Photo taken 5/20/15).

Interstate 19 North at Exit 69: Duval Mine Rd  (Photo taken 5/20/15).

Interstate 19 North assurance shield near kilometer marker 70.  (Photo taken 5/20/15).

An emergency call box exists 1/2 mile ahead on the shoulder.  (Photo taken 5/20/15).

Near kilometer marker 71, the standard speed limit of 75 mph resumes.  (Photo taken 5/20/15).

Distance sign on Interstate 19 North. It's 4 kilometers to Sahuarita, 30 kilometers to the junction of Interstate 10 (norther terminus of I-19), and 32 kilometers to Tucson.  (Photo taken 5/20/15).

A (seemingly random) emergency call box on the shoulder near kilometer marker 71.  (Photo taken 5/20/15).

Interstate 19 North: Road view from kilometer marker 74.  (Photo taken 5/20/15).

Interstate 19 North at Exit 75: Sahuarita Rd  (Photo taken 5/20/15).

Interstate 19 North at kilometer marker 78.  (Photo taken 5/20/15).

Interstate 19 North approaching Exit 80 - 1 kilometer.  (Photo taken 5/20/15).

Take Exit 80 for Arizona Tourist Info.  (Photo taken 5/20/15).

Interstate 19 North at Exit 80: Pima Mine Rd. Yeah, let's just forget about how this one turned out and move on, shall we?  (Photo taken 5/20/15).

Interstate 19 North at kilometer marker 82.  (Photo taken 5/20/15).

Distance sign near kilometer marker 83. It's 14 kilometers to the junction of AZ 86, 19 kilometers to the junction of Interstate 10, and 21 kilometers to Tucson.  (Photo taken 5/20/15).

Interstate 19 North at Exit 87: Papago Rd  (Photo taken 5/20/15).

Take Exit 92 to San Xavier Mission.  (Photo taken 5/20/15).

The speed limit decreases to 65 mph as we approach the Tucson city limits.  (Photo taken 5/20/15).

Interstate 19 North as it prepares to cross the Santa Cruz River.  (Photo taken 5/20/15).

Interstate 19 North at Exit 92: San Xavier Rd  (Photo taken 5/20/15).

Interstate 19 North as it enters the Tucson city limits.  (Photo taken 5/20/15).

Take Exit 95 to Pascua Yaqui Pueblo and Pima Community College.  (Photo taken 5/20/15).

Interstate 19 North at Exit 95: Valencia Rd / Tucson International Airport  (Photo taken 5/20/15).

North of Exit 95, the speed limit decreases to 55 mph and remains that way for the rest of Interstate 19's duration.  (Photo taken 5/20/15).

Interstate 19 North at Exit 98: Irvington Rd  (Photo taken 5/20/15).

Take Exit 99 to Desert Museum and Old Tucson.  (Photo taken 5/20/15).

Interstate 19 North at Exit 99: AZ 86 - Ajo Way  (Photo taken 5/20/15).

Interstate 19 North approaching Exit 101.  (Photo taken 5/20/15).

Interstate 19 North at Exit 101: Interstate 10 East - El Paso  (Photo taken 5/20/15).

Interstate 19 North at Exit 102: 29th St / 22nd St / Silverlake Rd / Starr Pass Blvd  (Photo taken 5/20/15).