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The Arizona State Highway system was introduced on September 9, 1927, by the State Highway Commission (formed on August 11 of the same year). It incorporated the new federal aid system and also the U.S. Highway system. The 1927 plan included 27 state routes, most of which were simply dirt roads.
Arizona [b] is a state in the Southwestern region of the United States, sharing the Four Corners region of the western United States with Colorado, New Mexico, and Utah.It also borders Nevada to the northwest and California to the west, and shares an international border with the Mexican states of Sonora and Baja California to the south and southwest.
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 ...
Several irrigation systems divert water from the Colorado River, of which the one most vital to Arizona is the Central Arizona Project. The Central Arizona Project, which is 336 miles (541 km) long, diverts 1,500,000 acre-feet (1.9 km 3 ) of water from Lake Havasu City into central and southern Arizona. [ 25 ]
Guadalupe Canyon Creek, tributary to the San Bernardino River joins it at just below Dieciocho de Augusto, Sonora. Whitewater Draw : originally considered the upper reach of the Rio de Agua Prieta , it enters Mexico as the head of Rio de Agua Prieta, which runs southward then southeast to join the Rio de San Bernardino , at La Junta de los Rios ...
The highway has major junctions with U.S. Route 93 (US 93; the main highway connecting Phoenix and Las Vegas, Nevada) in Kingman and again approximately 22 miles (35 km) to the east and I-17 (the freeway linking Phoenix to northern Arizona) in Flagstaff. For the majority of its routing through Arizona, I-40 follows the historic alignment of US 66.
Articles about U.S. Highways that pass through the U.S. state of Arizona. ... Pages in category "U.S. Highways in Arizona" The following 41 pages are in this category ...
Interstate 11, the Hassayampa Freeway, is a proposed Interstate Highway in the United States to run from Casa Grande, Arizona, northwest to Las Vegas, Nevada, by way of Kingman, Arizona. The highway will parallel and/or upgrade existing U.S. 93 north of Wickenburg; south of Wickenburg, it will follow a new freeway near the Hassayampa River ...