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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 ...
Cite ADOT map}} is used to cite official State Highway Maps published by ADOT or the Arizona State Highway Department online. Currently, there are maps for 1919, 1921, 1926 to 1932, 1934 to 1936, 1939 to 1943, 1946, 1958, 1961, 1963 and 1971.
U.S. Highways replace the prefix "S" used by State Routes under the ATIS nomenclature with "U" while Interstate Highways use the prefix "I". [1] Suffixed routes under ATIS always have the internally applied suffix between the prefix. [3] State Business Route 79 under ATIS nomenclature is referred to as "SB079" and SR 93X is "SX093". [1]
There are 71 primary Interstate Highways in the Interstate Highway System, a network of freeways in the United States. These primary highways are assigned one- or two-digit route numbers, whereas their associated auxiliary Interstate Highways receive three-digit route numbers. Typically, even-numbered Interstates run east–west, with lower ...
U.S. Route 160 (US 160), also known as the Navajo Trail, is a U.S. Highway which travels west to east across the Navajo Nation and Northeast Arizona for 159.35 miles (256.45 km). US 160 begins at a junction with US 89 north of Cameron and exits the state into New Mexico south of the Four Corners Monument .
Arizona State Route 90; Arizona State Route 92; Arizona State Route 93; Arizona State Route 95; Arizona State Route 96; Arizona State Route 97; Arizona State Route 98; Arizona State Route 99; Arizona State Route 101; Arizona State Route 143; Arizona State Route 169; Arizona State Route 176; Arizona State Route 177; Arizona State Route 179 ...
The highway does provide access to Mount Graham, one of the higher peaks in Arizona at over 10,000 feet (3,000 m). It also provides access to the Mount Graham International Observatory . [ 1 ] [ 2 ] Part of SR 366 is designated as the Swift Trail Parkway under the Arizona Parkways, Historic and Scenic Roads program.
U.S. Route 95 was a late addition to Arizona's U.S. Highway system, having been extended into the state around 1960 during the dawn of the Interstate Highway System. [6] [7] Though it is a short section of highway, only traveling between Ehrenberg and San Luis at the Mexico–United States border, it also serves as the main north–south highway to the cities of Yuma, San Luis, and Quartzsite. [2]