Motorists travelling on the Brooklyn-Queens Expressway are now making the trip over Newtown Creek on the new single tower cable-stayed Koscuiszko Bridge designed to accommodate traffic levels that far exceed the capacity of the original bridge that opened in 1939. The new bridge opened to traffic on April 27, 2017, becoming the first new bridge to open in New York City since the Verrazano Bridge in 1964.
An estimated 180,000 vehicles per day use this 1.1-mile segment of the Brooklyn-Queens Expressway. As one of New York City’s few north-south interstates, the original Kosciuszko Bridge could not efficiently handle the present volume of traffic due to its narrow lanes, steep grades, lack of shoulders, and short merge/weave distances near ramps and interchanges, which did not meet current highway design standards.
WSP has played multiple key roles throughout the design and construction of the bridge on behalf of the New York State Department of Transportation (NYSDOT). The firm provided design and engineering services that included structural alternative analysis, preliminary engineering, development of design-build procurement documents, design oversight and quality assurance, bridge/structural engineering, civil engineering, development of work zone traffic control plans, demolition engineering, landscape design, building design, geotechnical/seismic design, environmental mitigation/remediation and construction support services.
WSP is the owner’s engineer for Phase 1 of the project and provided design quality assurance and design oversight for the design-build contract and an independent check of the cable-stayed main span design.
The first span will ultimately carry eastbound (Brooklyn-bound) traffic. The design-build contract was NYSDOT’s largest ever, and one of its first design-build contracts.