This sitemap covers all highway pages within the state of Utah. Photography contributions by Alex Nitzman, Andy Field, Brent Ivy, Garrett Smith, Jake Bear, Kevin Trinkle and Landry Heaton. Many thanks also to Landry Heaton and Garrett Smith for their assistance with the Utah highway guides.

Highway Guides

Utah Interstate Business Routes

The State Road Commission established the policies for signing Business Loops and Spurs in Utah in April 1973. The business routes would only be considered where less than four interchanges are provided for an urban area on the parent route. Business Loops will not exceed six miles in length or impose substantial out-of-direction travel for through traffic. Business Spurs were limited to no more than three miles in length.1

Interstate Business Routes also required at least two automotive service stations open 16 hours a day, seven days a week; at least one restaurant open for breakfast, lunch, and dinner seven days a week; lodging options with at least 10 rooms of hotel or motel space; a pharmacy open at least 12 hours a day, six days a week; and a public telephone.1

Cities meeting this criteria in 1973 and eligible for Business Spur signing included Payson and Springville along I-15, Salina on I-70 and Coalville on I-80. Business Loops could be signed at Beaver, Cedar City, Fillmore, Nephi, Parowan, Spanish Fork and St. George on I-15. Eligible cities along I-70 included Green River and Richfield, Wendover along I-80 and Henefer, Morgan and Tremonton on I-80N.1

Population Statistics

State Population
Top County Populations
Salt Lake 1,152,633 Utah 622,213
Davis 351,713 Weber 256,359
Washington 171,700 Cache 127,068
Top City Populations
Salt Lake City 200,591 West Valley City 136,401
Provo 116,702 West Jordan 116,046
Orem 97,521 Sandy 96,901
Ogden 87,325 St. George 87,178
Layton 77,303 South Jordan 74,149
Source: U.S. Census
Annual Estimates of the Resident Population: April 1, 2010 to July 1, 2018 – 2018 Population Estimates

About Utah

  • Capital: Salt Lake City
  • Nickname: Beehive State
  • Area: 84,898.83 square miles or 219,889 square kilometers, 11th largest
  • Statehood: 45th state; admitted January 4, 1896
  • Total Interstate Mileage: 938.00 miles
  • Highest Point: Kings Peak (east of Kamas in High Uintas Wilderness Area), 13,528 feet above sea level

Major League Sports Franchises

  • Real Salt Lake (MLS)
  • Utah Jazz (NBA)


We use quite a few resources to construct these pages, and we try to keep it up to date (but that is not always the case!). Additional assistance and reference material was provided from some of the AARoads contributors. To complete the AARoads Utah Roads and Highways pages, we have utilized a variety of resources including:

  • CountyLemonade on Flickr – Site contributor Garrett Smith.
  • @LanRovr0 – Site contributor Landry Heaton.
  • U.S. Census for population figures, geographical size, and demographic information
  • Rand McNally Atlas and Thomas Guides – to confirm exit numbers, exit configurations, and identify street names within urban areas
  • Automobile Association of America – for still more map research, especially current and vintage maps
  • Utah Department of Transportation (UDOT) Highway Referencing for including mileage, route locations, descriptions, mileposts, exits/interchanges, and various features along the route.
  • UDOT Highway Resolutions for all legislative history of various state highways, including applications to AASHTO to add, delete, and modify Interstate and U.S. highways in Utah
  • Other resources include personal observations from hundreds of trips around the Beehive State and newspaper articles that are individually cited mostly for ongoing construction projects and completion dates

Page updated September 3, 2019.