Site Navigation Arizona Colorado Idaho Montana Nevada New Mexico Utah Wyoming     Interstate 15 Utah Interstate 15 travels northward from St. Georges to Tremonton through the heart of the Beehive State. The freeway serves the great Salt Lake City metropolitan area by connecting the capital city with Provo to the south and Ogden to the north. The freeway stays along the western reaches of the Wasatch Mountain Range from southwest Utah through to Great Salt Lake. Five highway guides cover Interstate 15 within the state of Utah. Interstate 15 - Washington County Interstate 15 - Iron County Interstate 15 - Central Utah Interstate 15 Northbound - Salt Lake City Metro Interstate 15 Southbound - Salt Lake City Metro Interstate 15 - Northern Utah Business Loop Interstate 15 - Beaver The southbound beginning of the Beaver business loop of Interstate 15. Business Loop Interstate 15 & Utah 160 travel 3.6 miles through the Beaver County seat between Exits 112 and 109. The loop provides access to Utah 21 (Center Street) in downtown Beaver. Utah 21 ventures 107 miles west to Minersville, Milford, Garrison, and the Nevada state line. There is no direct connection between Interstate 15 and Utah 21. Photo taken 10/18/04. Utah 160 end shield posted at the north return of Business Loop Interstate 15 to Interstate 15 (Exit 112). Main Street transitions into 1400 South west of the Exit 112 diamond interchange. Photo taken 10/18/04. Business Loop Interstate 15 - Parowan The Parowan business loop of Interstate 15 comprises 3.8 miles of roadway through the Iron County seat. Business Loop Interstate 15 departs Interstate 15 southbound via Exit 78 with Utah 274 along Main Street. Utah 271 takes over as the state highway co-route with Business Loop Interstate 15 from Utah 274's south end to junction Utah 143 (Center Street). Utah 143 and Business Loop Interstate 15 follow Main Street south to 200 South west back to Interstate 15 at Exit 75. Photo taken 10/18/04. Utah 274 end shield posted at the Business Loop Interstate 15 diamond interchange with Interstate 15 at Exit 78. Utah 274 exists soley to cosign with the business loop along Main Street between Utah 271 and Interstate 15. The state highway tallies just 0.7 miles. Photo taken 10/18/04. Scenes Pertaining to Interstate 15 Interstate 15 shields posted at the west end of the Exit 129 diamond interchange at Sulphurdale. The shields direct motorists onto the freeway from local ranch roads. Photo taken 10/18/04. A sign replacement project was underway at Exit 129 at the time of this photograph. Utah, like the state of Wyoming, places wooden shields and signs along their roadways. The new shield featuring a wide series "EM" Highway Gothic font replaced the one with series "C" highway gothic font. The signs face westward above Interstate 15. Photo taken 10/18/04. Andy Field flipped the old sign upright to display the differences between the old sign and new sign posted at the Interstate 15 northbound on-ramp at Sulphurdale. Manderfield Road enters the scene from the right. Old U.S. 91 turns northeast toward Cove Fort to the left. Photo taken 10/18/04. Page Updated September 28, 2005.