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The Yuma–Duncan route became part of the transcontinental Southern National Highway auto trail in 1913. In 1914, Arizona's highway system was further reorganized into a better-funded and organized network of early state highways. The Yuma–Duncan route between Globe and New Mexico was added to the newly designated Roosevelt Dam Highway.
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.
The 1980s and early 1990s would see the last large scale changes to U.S. Highways in Arizona. In 1981, SR 63 was decommissioned after it and BIA Route 12 became a southern extension of US 191 across the Utah state line into Arizona near Mexican Water, ending at US 66/I-40 in Chambers. [27]
Heading north, US 191 is a divided highway for about 5 miles (8.0 kilometres) until it arrives in Clifton, the start of the road's designation as the Coronado Trail Scenic Road (both an Arizona Scenic Route and a National Scenic Byway). [1] [6] This scenic road approximates the route Francisco Vázquez de Coronado took between 1540 and 1542. [7]
The current route through Show Low was completed sometime between 1935 and 1938. [12] US 60 through Arizona has had far fewer major changes than some other U.S. routes, but one notable example is being replaced by Interstate 10 between Los Angeles, California, and the highway's current terminus near Quartzsite. (The Arizona section of this ...
The northern segment (the Mohave Valley Highway) begins at the Colorado River bridge across from Needles, then goes directly northbound to Bullhead City, terminating at its junction with State Route 68 north of town. [1] There is a short SR 95 Truck at Parker, formerly a section of Arizona State Route 72, connecting to California State Highway 62.
Western terminus near Tuba City. The vast majority of U.S. Route 160 (US 160) through Arizona runs through rural and sparsely populated sections. As a result, the road is entirely two-lane except two short four-lane sections in Tuba City and Kayenta. [2] US 160 begins at a junction with US 89 north of Cameron within the Navajo Nation. [3]
State Route 67 (SR 67) is a 43.4 mi (69.8 km) long, north–south state highway in northern Arizona.Also called the Kaibab Plateau – North Rim Parkway, SR 67 is the sole road that links U.S. Route 89A (US 89A) at Jacob Lake to the North Rim of Grand Canyon National Park.