11400 South at I-15


Designed to accommodate dramatic commercial and residential growth, the 11400 South at I-15 Interchange Design-Build Joint Venture Project in South Jordan, Utah, involved significant improvements to major arterial roads, including the construction of a new Single Point Urban Interchange (SPUI) at I-15 and 114th South.

Crews reconstructed the freeway from 106th to 123rd, adding auxiliary lanes and rebuilding the entire pavement section. 114th South was completely rebuilt from I-15 to Bangerter Highway. The project included bridge construction over an 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 were critical to maintaining the project’s schedule. The project team sponsored a public engagement program to inform the affected communities and solicit feedback.

Markets: Transportation, Roadways

Location: South Jordan, Utah

Client: Utah Department of Transportation

Delivery: Design-Build

Completion: December 2010


  • Earthwork
  • Aggregate processing and placement
  • Concrete paving


  • Single Point Urban Interchange Bridge: 215-by-181-foot single-span concrete spliced girders
  • Railroad Bridge: 115-by-90-foot single-span precast concrete girders
  • Jordan River Bridge: 407-by-104-foot three-span steel girders
  • Jordan River Pedestrian Bridge: 200-by-17-foot prefabricated truss

2012 National Design-Build Merit Award
Category: Transportation
Design-Build Institute of America

2011 Design-Build Project of the Year Award
Design-Build Institute of America, Rocky Mountain Region

2011 Design-Build Award
Category: Transportation
Design-Build Institute of America, Rocky Mountain Region