The Illinois Tollway, in partnership with the Illinois Department of Transportation, completed the Tri-State Tollway (I-294)/I-57 Interchange in September 2022, two years ahead of schedule. Our team at Wight was pleased to be a part of the Phase I and Phase II development stages of the project.

To complete the I-294/I-57 Interchange, four new ramps were built connecting southbound I-57 to I-294 and I-294 to northbound I-57, which included a flyover ramp bridge. As part of this work, I-57 was widened between I-294 and the CSX Railroad to accommodate added traffic entering and exiting the Tollway. Additional work included drainage improvements, erosion and sediment control, and retaining wall construction. The flyover ramp bridge carries traffic from southbound I–57 to southbound I-294 and from 147th to southbound I-57. The multi-span structure is 2,649 feet long with a bridge deck approximately 16 feet above I-294 and 17 feet above I57.

The Tri-State Tollway (I-294)/I-57 Interchange improves travel by providing drivers with completed access between the two interstates. The enhanced interchange greatly reduces congestion on local routes, enhances economic development and improves regional mobility. The all-electronic interstate-to-interstate connection better serves commuters and freight operators while opening access for local communities.

To learn more about this project visit the Illinois Tollway's website: