Business Loop I-84 - Tremonton and Elwood

Business Loop I-84 branches east from Exit 40 of I-84 alongside SR 102 (Main Street) through the Tremonton city center and south with SR 13 to I-15/84 at Exit 376. Business Loop I-15 joins the 5.8 mile loop from 1000 West and the Box Elder County Fairgrounds to the south end in the town of Elwood.

Business Loop I-84 follows the historic routing of U.S. 30S, which was replaced by Interstate 80N northwest to Idaho. The intersection where the routes turn south from SR 102 to SR 13 (5200 West) is the former south end of U.S. 191, predecessor to I-15 between Tremonton and Pocatello, Idaho.