U.S. Route 89 (US 89) in the U.S. state of Arizona is a U.S. Highway that begins in Flagstaff and heads north to the Utah border northwest of Page. Route description US 89 begins at a junction with I-40 Bus. / US 180 in the city of Flagstaff, Arizona. The highway proceeds northeast, passing by suburban development and the San Francisco Peaks to the west. The highway then continues north through forested areas near Coconino National Forest and Sunset Crater Volcano National Monument. US 89 progresses north through sparsely populated desert areas. The highway passes through the community of Gray Mountain before entering the Navajo Nation. In the town of Cameron, the highway passes local businesses before intersecting with AZ 64, the highway that leads to the east entrance of Grand Canyon National Park. After the traffic circle with AZ 64, the road crosses over the Little Colorado River next to the decommissioned Cameron Suspension Bridge, which carried US 89 until 1959. The highway continues through unpopulated areas of the Navajo Nation, intersecting with the western terminus of US 160 near Tuba City. North of Tuba City, US 89 closely parallels the western edge of the Echo Cliffs. In Bitter Springs, the highway splits into US 89 and US Route 89A, with the latter road continuing to the west towards Kanab, Utah, where the two routes rejoin. Mainline US 89 proceeds northeast, ascending the Echo Cliffs towards Page, Arizona. Near Page, the highway passes near Horseshoe Bend and Antelope Canyon before meeting the western terminus of AZ 98. It continues past hotels and local businesses before abruptly turning to the west, crossing over the Colorado River on the Glen Canyon Dam Bridge just south of the Glen Canyon Dam and Lake Powell. The road travels northwest, passing through Glen Canyon National Recreation Area before entering Utah. History Prior to 1992, the southern terminus of US 89 was at Nogales, Arizona. US 89 ran concurrently with Interstate 19 (I-19) until Green Valley. The route was taken (in a northerly direction) through Tucson via 6th Avenue, Congress Street and Granada Avenue. The route was carried out of Tucson via State Route 77 (SR 77). Further north it was carried via the Pinal Pioneer Parkway northwest out of Oracle Junction on SR 79. In Maricopa County, it ran concurrently with existing US 60 along Main Street in Mesa, Apache Boulevard and Mill Avenue