The shields for Arizona's primary and auxiliary Interstate highways. There are six primary Interstate highways and three auxiliary Interstate highways in Arizona. Interstate 8 (I-8) - Runs from the California state line to I-10 in Casa Grande. Interstate 10 (I-10) - Runs from the California state line to the New Mexico state line. Interstate 11 (I-11) - Runs from the Nevada state line near Boulder City, NV to I-17 in Phoenix, AZ. Interstate 15 (I-15) - Runs from the Nevada state line to the Utah state line. Interstate 17 (I-17) - Runs from the U.S.-Mexico border in Nogales to the Utah state line near Page, AZ. Interstate 40 (I-40) - Runs from the California state line to the New Mexico state line. Interstate 410 (I-410) - Runs from I-10 in Chandler to I-10 in the Estrella Village of Phoenix. Planned as Arizona State Route 202 before receiving the I-410 designation. Interstate 510 (I-510) - Runs from I-10 in Phoenix to Arizona State Route "Loop" 101 in Phoenix. I...