42nd St Tunnel Project Wins ACEC New York Award
The Grand Central Terminal (GCT) Pedestrian Tunnel, designed by STV as part of the Skanska–STV design-build team, received a Diamond Award – the program’s highest level of recognition – and now advances as a finalist for the statewide Empire Award, which will be announced in April. The full list of project winners can be viewed here.
More than a century after Grand Central Terminal opened, growing passenger volumes tied to Grand Central Madison and heavy transfers along the 7 Line created congestion, backtracking and safety concerns in one of the nation’s most complex underground transit environments. To relieve those pressure points, the MTA commissioned a new pedestrian tunnel beneath East 42nd Street and Lexington Avenue that provides a direct, intuitive connection between the 7 Line and Grand Central’s mezzanine and Lexington Line platforms.
Working as engineer-of-record, STV led the structural, geotechnical and systems design and helped the team deliver the passageway under live transit operations, with shallow rock cover, dense utilities and zero tolerance for vibration or settlement impacts on nearby landmark buildings. The project finished under budget, improved circulation and egress for tens of thousands of daily riders and set a new benchmark for shallow-cover urban tunneling in New York City. Gall Zeidler Consultants served as Construction Manager and provided preliminary design and planning support.
Project teams will be honored at ACEC New York’s Engineering Excellence Awards gala on April 18 in New York City.
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