Design-Build Replacement of Route 2 over I-95, Lexington, MA

Courtesy of TranSystems

TranSystems was the lead designer for the design-build replacement of the bridges carrying Route 2 over I-95, and drainage and safety improvements along two miles of I-95. This interchange serves 67,000 vehicles daily and abuts the Cambridge water supply, therefore mitigation of traffic and environmental impacts was a major requirement. The design utilized accelerated bridge construction with precast, modular, concrete abutments, the first use of this technique by MassDOT, avoiding more invasive deep foundations and facilitating work through the winter. The design also adjusted the Route 2 lane configuration to improve traffic flow for the thousands who travel this interchange daily.

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Supported by the staff of The Engineering Center Education Trust