List of U.S. Highways in Utah

The U.S. Highways in Utah are maintained by the Utah Department of Transportation (UDOT). The United States Numbered Highway System is a nationwide system with only a small portion of its routes entering Utah. Originally, the State Road Commission of Utah, created on March 23, 1909 was responsible for maintenance, but these duties were rolled into the new UDOT in 1975.[1] There are 2,061.979 miles (3,318.434 km) of U.S. Highways in the state. The longest is U.S. Route 89 at 502.577 miles (808.819 km) and the shortest is U.S. Route 89A at 2.94 miles (4.73 km). Six former U.S. Highways exist in the state of Utah; of these, five have been replaced by current interstate and U.S. Highways, while the other was replaced by a state route. The most recent change was the redesignation of U.S. Route 666 as U.S. Route 491 in 2003.[2]

Highway markers for U.S. Highways in Utah
Highway names
US HighwaysUS Highway nn (US nn)
System links
  • Utah State Highway System

Mainline routes
Number Length (mi) Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
US 6 373.963601.835 US 6 / US 50 at the Nevada state line towards ElyI-70 / US 6 / US 50 at the Colorado state line towards Grand Junction —— US 6 enters Utah through Delta, joined with US 50 until just after Delta and crosses across the middle of the state before joining I-70 and US 50 again to enter into Colorado, east of Cisco.[3][4]
US 30S —— Idaho state line near SnowvilleWyoming state line towards Evanston 01926-01-01192601970-04-151970 Replaced by I-80 / I-84 / US 189[5]
US 40 174.624281.030 I-80 at Silver Creek Junction near Park CityUS 40 at the Colorado state line towards Dinosaur —— US 40 starts at I-80 outside of Park City and heads through Heber City and Duchense before passing into Colorado near the Dinosaur National Monument.[6][7]
US 50 334.920539.001 US 6 / US 50 at the Nevada state line towards ElyI-70 / US 6 / US 50 at the Colorado state line towards Grand Junction —— US 50 enters Utah joined with US 6 until just outside Delta, crossing the midsection of Utah, before joining with I-70 for its final 174 miles (280 km) to Colorado.[8][9]
US 89 502.577808.819 US 89 at the Arizona state line towards PageUS 89 at the Idaho state line at Bear Lake —— US 89 is the longest U.S. Highway in Utah, going from the Arizona border to Idaho, paralleling I-15 for a good majority of the route, but it does split off at the north and south end of the route.[10][11]
US 91 45.27172.857 I-15 south of Brigham CityUS 91 at the Idaho state line towards Preston —— The highway currently serves as a connection between the Cache Valley area of Utah and Idaho to the Salt Lake and Pocatello population centers.[12][13]
US 160 —— US 6 / US 50 at Crescent JunctionColorado state line near Monticello —01970-01-011970 Replaced by US 163/US 666 (modern US 191 and US 491)[14]
US 163 41.40566.635 US 163 at the Arizona state line in Monument ValleyUS 191 at Bluff —— US 163 enters Utah in Monument Valley in the southeastern part of the state, across the San Juan River towards Bluff.[15][16]
US 189 29.21647.019 I-15 south of ProvoI-80 / US 189 at the Wyoming state line towards Evanston —— From I-15 in Provo northeast through Provo Canyon to Heber City. From this point it overlaps US 40 until it intersects I-80, at which point it overlaps I-80 until the Wyoming border near Evanston.[17][18]
US 189 —— US 91 in NephiUS 89 at Pigeon Hollow Junction —— Replaced by SR-132[19]
US 191 404.168650.445 US 191 at the Arizona state line towards GanadoUS 191 at the Wyoming state line towards Rock Springs —— US 191 enters Utah in the southeastern part of the state and travels northward through Moab, veers to the northwest to Price, and back to the northeast through Vernal, before exiting into Wyoming near Flaming Gorge Reservoir.[20][21]
US 450 —— US 6 / US 50 at Crescent JunctionColorado state line near Monticello 01926-01-011926— Replaced by US 160 (modern US 191 and US 491)[22]
US 491 17.02027.391 US 191 in MonticelloUS 491 at the Colorado state line towards Dove Creek —— From US 191 in Monticello eastward until it exits the state into Colorado.[23][24]
US 530 —— US 40 near Park CityUS 30S near Echo 01926-01-011926— Replaced by US 189 (modern I-80)[22]
US 666 —— US 191 in MonticelloUS 666 at the Colorado state line towards Dove Creek 01970-01-01197002003-01-012003 Replaced by US 491[2]
  •       Former
  • US 50 descending from Skull Rock Pass in western Utah
  • US 89 near Long Valley Junction, a Utah Scenic Byway

Special routes
Number Length (mi) Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes

Temp. US 6		 —— ColtonCastle Rock ——

US 6 Bus.		 3.435.52 —— —— Serves Helper

US 6 Bus.		 2.9424.735 US 6 / US 50 in PriceUS 6 / US 50 in Price 01975-01-011975current Cosigned with SR-55; former routing of US 6

US 6 Bus.		 11.218.0 —— —— Serves Cisco

US 40 Alt.		 —— —— —— Served Salt Lake City

US 40 Alt.		 —— —— —— Served Park City

US 50 Alt.		 —— Nevada/Utah State LineProvo ——

Temp. US 50		 —— Colton, UtahCastle Rock ——
US 89A 2.944.73 US 89A at the Arizona state line towards FredoniaUS 89 in Kanab —— Original routing of US 89 prior to the construction of the Glen Canyon Dam; demoted to an auxiliary route listed as State Route 11 until 2008; provides access to Grand Canyon National Park from Utah[10][25]
US 89A —— —— —— Served Salt Lake City
US 89A —— North Salt LakeFarmington ——

Temp. US 89		 —— Utah/Wyoming State LineGarden City ——

US 91 Alt.		 —— —— —— Served Salt Lake City

US 91 Alt.		 —— North Salt LakeFarmington ——

US 91 Alt.		 —— North Salt LakeOgden ——

US 189 Alt.		 —— HailstoneWanship ——

US 191 Bus.		 3.435.52 —— —— Serves Helper
  •       Former

See also
  •  U.S. Roads portal
  •  Utah portal

References
  1. "Utah State Archives Catalog". Retrieved July 29, 2008.
  2. Linthicum, Leslie (July 31, 2003). "It's Now U.S. 491, Not U.S. 666". Albuquerque Journal. Retrieved July 29, 2008.
  3. "Highway Reference - 0006 P" (PDF). Utah Department of Transportation. May 1, 2008. Retrieved July 26, 2008.
  4. "Utah Code §72-4-106". Utah State Legislature. Archived from the original on July 11, 2008. Retrieved July 29, 2008.
  5. Bureau of Public Roads & American Association of State Highway Officials (November 11, 1926). United States System of Highways Adopted for Uniform Marking by the American Association of State Highway Officials (Map). 1:7,000,000. Washington, DC: U.S. Geological Survey. OCLC 32889555. Retrieved November 7, 2013 – via Wikimedia Commons.
  6. "Highway Reference - 0040 P" (PDF). Utah Department of Transportation. May 1, 2008. Retrieved July 26, 2008.
  7. "Utah Code §72-4-109". Utah State Legislature. Archived from the original on July 11, 2008. Retrieved July 29, 2008.
  8. "Highway Reference - 0050 P" (PDF). Utah Department of Transportation. May 1, 2008. Retrieved July 26, 2008.
  9. "Utah Code §72-4-110". Utah State Legislature. Archived from the original on July 11, 2008. Retrieved July 29, 2008.
  10. "Utah Code §72-4-114". Utah State Legislature. Retrieved July 29, 2008.
  11. "Highway Reference - 0089 P" (PDF). Utah Department of Transportation. May 1, 2008. Retrieved July 26, 2008.
  12. "Highway Reference - 0091 P" (PDF). Utah Department of Transportation. May 1, 2008. Retrieved July 26, 2008.
  13. "Utah Code §72-4-115". Utah State Legislature. Retrieved July 29, 2008.
  14. Road Atlas of the United States (Map). National Geographic Company. 1960.
  15. "Highway Reference - 0163 P" (PDF). Utah Department of Transportation. May 1, 2008. Retrieved July 26, 2008.
  16. "Utah Code §72-4-122". Utah State Legislature. Archived from the original on July 11, 2008. Retrieved July 29, 2008.
  17. "Highway Reference - 0189 P" (PDF). Utah Department of Transportation. May 1, 2008. Retrieved July 26, 2008.
  18. "Utah Code §72-4-124". Utah State Legislature. Archived from the original on July 11, 2008. Retrieved July 29, 2008.
  19. Rand McNally (1931). "Utah" (Map). Auto Road Atlas. Chicago: Rand McNally. Archived from the original on May 14, 2004.
  20. "Highway Reference - 0191 P" (PDF). Utah Department of Transportation. May 1, 2008. Retrieved July 26, 2008.
  21. "Utah Code §72-4-125". Utah State Legislature. Archived from the original on July 11, 2008. Retrieved July 29, 2008.
  22. Rand McNally Junior Auto Road Map Utah (Map). Rand McNally. 1927.
  23. "Highway Reference - 0491 P" (PDF). Utah Department of Transportation. May 1, 2008. Retrieved July 26, 2008.
  24. "Utah Code §72-4-137". Utah State Legislature. Archived from the original on July 11, 2008. Retrieved July 29, 2008.
  25. "Highway Reference - 089A P" (PDF). Utah Department of Transportation. May 1, 2008. Retrieved July 26, 2008.
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