About Tucson District

The highest elevation on any Tucson District route is 6,775 Feet on SR 386 at mile post 12.  Lowest elevation on any Tucson District route is 1,145 Feet on SR 238 at mile post 42.

Tucson District has all or a portion of five Indian Reservations included within its boundaries (Gila River, Maricopa Ak Chin, Tohono O’Odham, Pascua Yaqui and San Xavier).

Within the Tucson District are five State Parks (Picacho Peak, Catalina, Patagonia Lake, Mc Farland and Tubac Presidio), four National Monuments (Saguaro East, Saguaro West, Organ Pipe Cactus and Casa Grande), two National Wildlife Refuges (Cabeza Prieta and Buenos Aries), Kitt Peak National Observatory, Tumacacori National Historic Park, and Coronado National Forest broken up in five separate areas. Tucson District is the center of the copper producing industry in Arizona.

Summer time ambient air temperatures in various areas of the Tucson District exceeds 110° F. I-10 through Tucson carries a daily peak traffic volume of 169,000 vehicles per day with 28% large trucks.  I-19 through the southern portion of Tucson carries a daily peak traffic volume of 92,000 vehicles per day with 9% large trucks.  Traffic counts and percent trucks are from 2005.