Interstate 19 (I-19) is a north–south Interstate Highway located entirely within the US state of Arizona. I-19 travels from Nogales, roughly 90 meters (300 ft) from the Mexican border, to Tucson, at I-10. The highway also travels through the cities of Rio Rico, Green Valley, and Sahuarita.
I-19 becomes an at-grade divided freeway just west of its southern terminus in Nogales. The US–Mexico border is just south of the Interstate (left of image).
I-19 northbound at the I-10 interchange; the downtown Tucson skyline can be seen on the left.
Metric-unit advance guide sign on I-19, installed as part of the Valencia Road interchange renovation
I-19 Bus. (Grand Avenue) junction with SR 82 in Nogales
Interstate Highway System
The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, or the Eisenhower Interstate System, is a network of controlled-access highways that forms part of the National Highway System in the United States. The system extends throughout the contiguous United States and has routes in Hawaii, Alaska, and Puerto Rico.
I‑55 under construction in Mississippi in May 1972
Commemorative sign introduced in 1993. The system was established during Dwight D. Eisenhower's presidency, and the five stars commemorate his rank as General of the Army during World War II.
The fervor of urban renewal led to the routing of Interstate 81 through the middle of Syracuse's 15th Ward in the 1960s. The viaduct is now slated for demolition.
I-95 in Columbia, Maryland, built to modern standards.
