This city of Carmel project converted the existing signalized intersection at 96th Street and Keystone Parkway to a grade-separated roundabout interchange. The $28.7 million project was successfully delivered through a teaming effort between CHA and United. The portion of the project completed by United included the bridge design for Keystone Parkway over 96th Street which also involved utility coordination and right-of-way engineering. 

This project was part of the city of Carmel’s plan to convert Keystone Parkway to a free-flow parkway and upgrade the 96th Street corridor. The project’s goal was to improve safety at the intersection while also alleviating substantial traffic congestion in this area. The interchange features a two-lane, teardrop shaped roundabout on 96th Street under Keystone Parkway and also accommodates ramps to and from both directions of Keystone Parkway. The bridge carries three northbound lanes and three southbound lanes over 96th Street.