Houbolt Rd at I-80 Diverging Diamond Interchange

Joliet, Illinois

City of Joliet, IL

With heavy truck traffic and limited right-of-way, the City of Joliet had unique criteria when entering the reconstruction of Houbolt Road between I-80 and U.S. Route 6, including the modification of the existing interchange of Houbolt Road at I-8- and Houbolt Road at U.S. 6 intersection. The improvements included reconfiguring the existing standard diamond interchange with a Diverging Diamond Interchange (DDI) at Houbolt Road and I-80, which provides an increased level of service with its high turning volumes at the ramps. TranSystems provided Phase I and Phase II design services, which included contract plan preparation, special provisions, estimates, and required permits.