U.S. Route 89 in Utah

U.S. Route 89
US 89 highlighted in red
Route information
Maintained by UDOT
Length	502.577 mi[1] (808.819 km)
Existed	1926–present
Tourist routes	Logan Canyon Scenic Byway
Major junctions
South end	US 89 towards Flagstaff, AZ
Major intersections	I-70 near Joseph US 50 in Salina US 6 in Thistle I-15 in Lehi I-215 in Murray I-80 in Salt Lake City I-15 in Salt Lake City–North Salt Lake I-15 in Bountiful I-84 near Uintah US 91 in Brigham City
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
United States Numbered Highway System List Special Divided Utah State Highway System Interstate US State Minor Scenic
← SR-88 → US 89A

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.^[2]

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.