U.S. Route 89 in Utah
U.S. Route 89 (US 89) in the U.S. state of Utah is a north-south United States Highway spanning more than 502 miles (807.891 km) through the central part of the state, making it the longest road in Utah. Between Provo and Brigham City, US-89 serves as a local road, paralleling (and occasionally concurring with) Interstate 15, but the portions from Arizona north to Provo and Brigham City northeast to Wyoming serve separate corridors. The former provides access to several national parks and Arizona, and the latter connects I-15 with Logan, the state's only Metropolitan Statistical Area not on the Interstate.
U.S. Route 89 | ||||
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US 89 highlighted in red | ||||
| Route information | ||||
| Maintained by UDOT | ||||
| Length | 502.577 mi (808.819 km) | |||
| Existed | 1926–present | |||
| Tourist routes | Logan Canyon Scenic Byway | |||
| Major junctions | ||||
| South end | US 89 towards Flagstaff, AZ | |||
| North end | US 89 towards Montpelier, ID | |||
| Location | ||||
| Country | United States | |||
| State | Utah | |||
| Counties | Kane, Garfield, Piute, Sevier, Sanpete, Utah, Salt Lake, Davis, Weber, Box Elder, Cache, Rich | |||
| Highway system | ||||
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When US-89 was established in the state in 1926, the road initially extended north to US-91 in Spanish Fork. Following the extension of the former to the Canada–US border, Interstate 15 was constructed roughly paralleling US-89 to the west and replacing US-91 south of Brigham City. During this process, US-89 was rerouted in southern Utah and northern Arizona, with the old roadway becoming US-89A.