OKRoads -- Spring Training 2004 Roadtrip -- Interstate 19 Arizona

At a length of just 63 miles, Interstate 19 is one of the shortest two-digit interstates in the country. It connects Interstate 10 in Tucson with Nogales and the U.S.-Mexico border. The highway is currently signed in metric units, so all exits and mile markers are based on kilometers. However, those days appear to be numbered, as mile markers have been put in place along most of Interstate 19, and the newest signs near Interstate 10 are based on mileage. (Even though the exit numbers are still kilometer-based) On Day Four of the Spring Training 2004 Roadtrip, I drove all of Interstate 19 in both directions.

	Interstate 19 South assurance shield just south of Interstate 10.
	Interstate 19 South at Exit 99 - Ajo Way.
	This sign informs motorists that metric signs are used on Interstate 19. Just past that sign is a 1 km advance sign for Exit 98.
	Interstate 19 South at Exit 98 - Irvington Rd.
	Interstate 19 South at Exit 95 - Valencia Rd./Tucson International Airport.
	Interstate 19 South at Exit 92 - San Xavier Rd.
	Interstate 19 South at Exit 87 - Papago Rd.
	"Mileage" sign on Interstate 19 South. I don't know what you'd call a sign that lists distances in kilometers. A "kilometerage" sign, perhaps?
	Interstate 19 South at Exit 80 - Pima Mine Rd.
	Interstate 19 South at Exit 75 - Sahuarita Rd.
	Interstate 19 South at Exit 69 - Duval Mine Rd.
	Interstate 19 South at Exit 65 - Esperanza Blvd.
	Interstate 19 South at Exit 63 - Continental Rd.
	Interstate 19 South at Exit 56 - Canoa Rd.
	Interstate 19 South at Exit 48 - Arivaca Rd.
	Interstate 19 South at Exit 42 - Agua Linda Rd.
	Interstate 19 South at Exit 40 - Chavez Siding Rd.
	Interstate 19 South at Exit 34 - Tubac.
	Interstate 19 South at Exit 29 - Tumacacori/Carmen.
	Interstate 19 South at Exit 25 - Palo Parado Rd.
	Interstate 19 South at Exit 22 - Peck Canyon Rd.
	Interstate 19 South at Exit 17 - Rio Rico Dr./Yavapai Dr.
	Interstate 19 South at Exit 12 - AZ 289 - Pena Blanca Lake Recreational Area.
	Guns and ammunition are illegal in Mexico, as this sign states in English and Spanish.
	Interstate 19 South at Exit 8 - Grand Ave. This is the southbound beginning of Business Loop I-19.
	Interstate 19 South at Exit 4 - AZ 189 South.
	Interstate 19 South at Exit 1B - Western Ave. The mountains in the distance are in Mexico.
	Interstate 19 South approaching Exit 1A - International St. - 500 meters. Downtown Nogales is 1 km away.
	Interstate 19 South at Exit 1A - International St. There is not actually a signal ahead.
	Interstate 19 South as it comes to an end. Mexico is just a few feet to the right of this picture. There is no "END" sign at this terminus.
	The sign in the distance is for the border crossing. This view is from the curve in the distance of the above photograph.

	Interstate 19 North as it begins in Nogales.
	Interstate 19 North approaching Exit 1 - Western Ave. - 500 meters.
	Interstate 19 North at Exit 1 - Western Ave.
	Interstate 19 North at Exit 4 - AZ 189 South - Mariposa Rd.
	Interstate 19 North at Exit 12 - AZ 289 West - Ruby Road.
	Interstate 19 North at Exit 17 - Rio Rico Dr./Yavapai Dr.
	Interstate 19 North at Exit 22 - Peck Canyon Rd.
	Interstate 19 North at Exit 25 - Palo Parado Rd.
	Interstate 19 North at kilometer 26.
	Interstate 19 North at Exit 29 - Tumacacori/Carmen.
	Interstate 19 North at Exit 34 - Tubac.
	Interstate 19 North at Exit 40 - Chavez Siding Rd.
	"All Traffic Must Stop 1 km" sign on Interstate 19 North. Exit 42 is the Border Patrol checkpoint.
	Interstate 19 North at Exit 42 - Agua Linda Rd.
	Interstate 19 North at Exit 48 - Arivaca Rd.
	Interstate 19 North at Exit 56 - Canoa Rd.
	Distance sign on Interstate 19 North just past Exit 56. Interstate 10 is 44 km ahead, and Tucson is 45 km away.
	Interstate 19 North at Exit 63 - Continental Rd.
	Interstate 19 North at Exit 65 - Esperanza Blvd.
	Interstate 19 North at Exit 69 - Duval Mine Rd.
	Distance sign on Interstate 19 North just north of Green Valley. Interstate 10 is now 30 kilometers away.
	Interstate 19 North at Exit 75 - Sahuarita Rd.
	Interstate 19 North at Exit 80 - Pima Mine Rd.
	Distance sign on Interstate 19 North just past Pima Mine Rd. AZ 86, even though it is not mentioned on the actual signs for the exit, is 14 km ahead.
	Interstate 19 North at Exit 87 - Papago Rd.
	Interstate 19 North at Exit 92 - San Xavier Rd.
	Interstate 19 North at Exit 95 - Valencia Rd./Tucson International Airport.
	Interstate 19 North at Exit 98 - Irvington Rd.
	Interstate 19 North approaching Exit 99 - Ajo Way - 1 km, and Exits 101A-B - Interstate 10 - 3 km. The sign is missing the Interstate 10 shield.
	Interstate 19 North at Exit 99 - (AZ 86)/Ajo Way. Notice the sign for Exit 102 is in miles. There is normally a sign here for Interstate 10 East, but that ramp is closed due to construction at the I-10/I-19 interchange.
	Interstate 19 North approaching Exit 102 - 29th St./22nd St./Silverlake Rd./ Starr Pass Blvd. - 1/2 mile. The lights on the right side of the sign bridge are for a future sign for the Interstate 10 East exit.
	Interstate 19 North approaching Exit 102 - 1/4 mile. When the construction is complete, the exit to Interstate 10 East will be near this point.
	Interstate 19 North at Exit 102 - 29th St./22nd St./Silverlake Rd./Starr Pass Blvd. The flyover ramp will carry Interstate 10 West to Interstate 19 South traffic.
	Close-up view of the flyover from I-10 West to I-19 South, with the Tucson skyline and the mountains providing a nice view.