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The Arizona Department of Transportation (ADOT) is the agency responsible for building and maintaining the Interstate Highways in the Arizona State Highway System. These highways are built to Interstate Highway standards , which are freeways that have a 75-mile-per-hour (121 km/h) speed limit in rural areas and a 65 mph (105 km/h) speed limit ...
The Arizona Department of Transportation (ADOT) internally recognizes Interstate Highways, U.S. Highways and Arizona Highways as all being separate types of highway designations. State highways within Arizona are referred to as Arizona State Routes or State Routes , with the prefix "SR" being used for abbreviations.
Example signage from Arizona's U.S. Highways U.S. Highways highlighted in red Special routes highlighted in blue System information Maintained by ADOT and local jurisdictions Length 2,060.22 mi (3,315.60 km) Includes overlaps with Interstates and State Routes Formed November 11, 1926 (by AASHO) September 9, 1927 (by Arizona) Highway names Interstates Interstate X (I-X) US Highways U.S. Route X ...
The backbone of Phoenix's freeway system is composed of three major freeways— Interstate 10, Interstate 17, and U.S. Route 60. Interstate 10, being a transcontinental route between California and Florida, is the most heavily traveled freeway in the Valley of the Sun. Interstate 17 runs down the center of Arizona, connecting Phoenix with ...
Former. ← I-8. → I-15. In the U.S. state of Arizona, Interstate 10 ( I‑10 ), the major east–west Interstate Highway in the United States Sun Belt, runs east from California, enters Arizona near the town of Ehrenberg and continues through Phoenix and Tucson and exits at the border with New Mexico near San Simon.
Interstate 40 in Arizona. Interstate 40 ( I-40) is an east–west Interstate Highway that has a 359.11-mile (577.93 km) section in the US state of Arizona, connecting sections in California and New Mexico. The Interstate is also referred to as the Purple Heart Trail to honor those wounded in combat who have received the Purple Heart. [ 2]
U.S. Route 70 ( US 70 ), also known as the Old West Highway, is an east–west U.S. Highway in the U.S. state of Arizona. The current route starts at US 60 in Globe and runs through the San Carlos Indian Reservation, Safford and Duncan into New Mexico near Virden. In Arizona, US 70 passes through mostly isolated hilly and mountainous terrain ...
U.S. Route 95 (US 95) is a major U.S. Highway in the American state of Arizona. Starting at the Mexican border in San Luis, US 95 acts as the main highway north through Gadsden, Somerton and Yuma before arriving in Quartzsite. Between Quartzsite and the California border on the Colorado River in Ehrenberg, US 95 runs entirely concurrent with I-10.