I-90 Montana State Line Slope Repair Project

under construction

The Wyoming Department of Transportation and Croell Inc. repaired five slope failures along a 6-mile stretch of the westbound lane of Interstate 90 near the Montana state line and Ranchester, Wyoming. The project involved removing failed soils and backfilling with lightweight scoria to improve drainage and stability. Additionally, 6 miles of the westbound lane were milled and overlayed, over 2 miles of the eastbound lane were paved ahead of schedule, two bridges were replaced with box culverts, and bridge decks at the Parkman Exit were repaired. Year two work scheduled for 2026 includes realigning approximately 4 miles of the eastbound lane and replacing two more bridges with box culverts.