Michigan Department of Transportation

I-94 Business Loop SPUI

Kalamazoo, MI

The US-131 at I-94 BL (Stadium Drive) project is a true feat of innovation, local partnerships and stakeholder collaboration. Located in the heart of Kalamazoo, Michigan, I-94 BL serves as a main artery to Western Michigan University (WMU), and many residential and commercial areas. The Michigan Department of Transportation (MDOT) enlisted Benesch as part of a team to redesign the interchange to improve capacity, mobility, safety and sustainability—all on an accelerated schedule to open in time for WMU’s home opener football game and meet local developer milestones. An expedited, complex, two-year schedule was developed to replace the existing clover leaf configuration with a Single Point Urban Interchange (SPUI). Accelerated Bridge Construction utilizing prefabricated substructure elements for the new Stadium Drive bridge—including piers, abutments and retaining walls—shaved six weeks off the schedule, reducing costs and traffic impacts. The bridge is the largest, most complex structure in Michigan to utilize prefabricated elements. Best Management Practices were also used to separate private and roadway runoff, rerouting it through a detention basin and natural areas before reaching Asylum Lake. Other project highlights include local agency/developer partnerships to relocate Century Drive and reconstruct and widen Stadium Drive; as well as ‘Complete Streets’ elements such as a new shared use path and sidewalk, carpool lot, interchange lighting and new pedestrian facilities. The final design not only improved capacity, mobility, safety and sustainability, but helped boost the local economy, too—all on schedule and within budget.

Project highlights

  • New SPUI interchange configuration
  • Accelerated Bridge Construction (ABC) utilizing prefabricated substructure elements erected at night to save time
  • Best Management Practices used to reroute runoff through a detention basin
  • Shared-use path