Business Loop I-15 - Blackfoot

The Blackfoot business route for I-15 overlays U.S. 91 (Broadway and Main Streets) from Exit 89 north to the city center. This section was previously the alignment of U.S. 191. The remainder of the route west along the couplet of Bridge and Judicial Streets and the commercial arterial back to I-15 at U.S. 26 / Exit 93 is a stand alone route.

During the late 1980s and early 1990s, Rand McNally incorrectly showed Business Loop I-15 following all of U.S. 91 between Blackfoot and Idaho Falls. Several shields were noted between Exit 93 and U.S. 91 during a August 2016 visit.

Updated July 31, 2026