The project location was on I-15 from MP-27 to 44 (New Harmony to the Toquerville exits). The elevation change from the bottom of the project to the top of Blackridge was just under 2,000 feet. Southbound semi-trucks had difficulty slowing down, and northbound semi-trucks had difficulty gaining speed back after slowing down. Typical projects of this size and tonnage start early spring; however, standing water on the southbound lanes caused several semi-truck slide-offs. The undesirable roadway conditions influenced starting midseason instead. Water sitting on the surface caused traction loss, and the trucks would slide as if they were on an ice-covered roadway.

The project used fiber-strand reinforced HMA, SMA and open-graded asphalt. (UDOT used open-graded asphalt to drain the water from the surface of the freeway to mitigate the issue with standing water.) FSR HMA and SMA Lifts were placed below the open grade for strength and stability.

All work had to be done at night. The open-grade asphalt was placed on the southbound lanes in 2020 to alleviate the standing water issues before winter. The timing of the project late in the 2020 season caused shorter work times due to nighttime temperatures. The shorter work schedule also required more cold joints and shorter runs.

The project addressed several safety issues. The team installed over 16,468 linear feet of cast-in-place Concrete Constant Slope Barrier. They also addressed guard rail issues, installed marking tape and epoxy for enhanced visibility, gabion baskets and Riprap for drainage, added additional drain boxes and reconstructed existing boxes. After a change order, the team added 12,677 cubic yards of untreated base course to bring the existing slopes into federal compliance (typically 4:1 or flatter).