11400 South at I-15 Interchange

Designed to accommodate dramatic commercial and residential growth, the 11400 South at I-15 Interchange Design-Build Joint Venture Project in South Jordan, Utah, included the construction of a new Single Point Urban Interchange (SPUI) at I-15 and 114th South. Ames crews reconstructed the freeway from 106th to 123rd, adding auxiliary lanes and rebuilding the entire pavement section, and 114th South was completely rebuilt from I-15 to Bangerter Highway. The project included bridge construction over the existing rail line, a traffic bridge, and a pedestrian bridge over the Jordan River.

The project’s urban location required significant maintenance of traffic efforts, and the design-build team provided right-of-way acquisition services. With more than 200 affected properties within the right-of-way, the timing and success of the property acquisitions was critical to maintaining the project’s schedule. The Ames team sponsored a public involvement program to inform the affected communities and solicit feedback.

The team encountered several unique challenges, including a 33-inch high-pressure water line, a new 42-inch sewer line, and multiple relocations of high-voltage distribution lines.