Utah State Route 259 (1957-1977)

U.S. Route 89
Map of US-89 (delineated in red)
Route information
Defined by Utah Code §72-4-114
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
	US-89A in Kanab I-70 near Joseph US-50 in Salina US-6 in Thistle US-189 in Provo I-15 in Lehi SR-71 in Draper I-215 in Murray I-80 in Salt Lake City I-15 in Salt Lake City/North Salt Lake I-15 in Bountiful SR-67 in Farmington I-84 near Uintah US-91 in Brigham City US-91 in Logan
North end:	US 89 towards Montpelier, ID
Highway system
United States Numbered Highway System List Special Divided Replaced State highways in Utah Interstate US State Scenic ← SR-88 US-89A →

In the U.S. state of Utah, U.S. Route 89 (US-89) is a long north–south state highway spanning more than 502 miles (807.891 km) through the central part of the state. 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.

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.

US-89 enters Utah from the south inside the Glen Canyon National Recreation Area, about 7 miles (11 km) north of the Glen Canyon Dam, where it crosses the Colorado River near Page, Arizona. After leaving the recreation area and passing the small town of Big Water, the highway curves west through the Grand Staircase-Escalante National Monument. US-89 stays near the monument's southern boundary, crossing the East Clark Bench and The Cockscomb and passing south of the Vermilion Cliffs of the Grand Staircase. At the city of Kanab, US-89 meets the north end of US-89A, an alternate route south into Arizona, and abruptly turns north and begins climbing the staircase. Here the Mount Carmel Scenic Byway begins; one of the Utah Scenic Byways, it stretches north to SR-12 at Bryce Canyon Junction. The Vermilion Cliffs are ascended via the canyon carved by Kanab Creek. Near the White Cliffs, US-89 meets SR-9 at Mt. Carmel Junction, where travelers can turn to reach Zion National Park. The final "step" is the Pink Cliffs, where the highway follows alongside the Virgin River to the highest point on US-89 in southern Utah and the east end of SR-14, a summit at Long Valley Junction (elevation 7450 feet/2300 m).