New Kosciuszko Bridge
PROJECT OVERVIEW
New York City's First Cable-Stayed Bridge
New York City's new Kosciuszko Bridge pairs two independent single-tower cable-stayed bridges, with the mirror-image structures combining to create the illusion of a single, dual tower cable-stayed bridge when viewed in elevation.
The iconic new bridges connect the New York City boroughs of Brooklyn and Queens via the Brooklyn-Queens Expressway. High Steel Structures supplied the metalized structural steel for both the eastbound and westbound bridges' main cable-stay spans, ultimately delivering a total of 6,249 tons of steel over two independent contracts with separate project teams and delivery methods.
Corrosion Protection for a 100-Year Service Life
NYSDOT specified a metalized coating for the main steel members in the new Kosciuszko Bridge's cable-stay spans' superstructures. The use of metalizing will protect the structure during its 100-year service life while reducing future maintenance requirements.
Galvanizing was used in conjunction with metalizing for selected secondary members, including the cable anchor assemblies. Because the length and interior diameter of the anchorage pipes prohibited their metalizing, these pieces were instead hot-dip galvanized.
Learn more about the options for bridge steel corrosion resistance.
Steel Fabrication
- Scope: Cable-stay Superstructure
- Steel Members: Edge Girders, Cable Anchorages, Plate Girders, Floor Beams
Project Details
Project Specs
Bridge Type: Cable Stayed
Steel Tonnage: 6,249 Tons (Phase I and II Combined Total)
Steel Type: Weathering Steel
Steel Coatings: Metalizing / Galvanizing
Project Teams:
|
Contract: Delivery : GC:
Steel Detailer: Fabricator: |
Phase I (EB Span) $555 Million Design-Build Skanska-Kiewit- HNTB DBM Vircon High Steel Structures |
Phase II (WB Span) $318 Million Design-Bid-Build Granite Construction WSP USA DBM Vircon High Steel Structures |
*Jobsite photos courtesy of Granite Construction Northeast.
