2003 NYACE Platinum Award in Structural Systems &
2002 NYSSPE Project of the Year
FOR THE REPLACEMENT OF THE ROUTE 9W VIADUCT
OVER WASHINGTON STREET
Along with accepting the 2002 Project of the Year Award presented by the New York State Society of Professional Engineers, this project also brought home the 2003 Platinum Award in Structural Systems presented by the New York Association of Civil Engineers. These honors were acknowledged for implementing innovative bridge design concepts for the rehabilitation of the Route 9W Viaduct over Washington Street in Rockland County, New York.
Designed at 1,200 feet in length without intermediate expansion deck joints and in full seismic compliance, this project features the longest, continuous seismically isolated unfilled grid deck composite with reinforced concrete slab constructed to date. Furthermore, the Route 9W deck is the first exodermic deck to be designed with the Load and Resistance Factored Design (LRFD) method.
HIGHLIGHTS
The construction work involved upgrading the structural capacity to meet seismic requirements, eliminating the two nonredundant thru girder structure, replacing the steel towers, and reducing the overall deck expansion joints, while using the existing foundations to minimize impact to wetland, residences and landscape.
WSP SELLS performed the in-depth inspection, prepared a structure condition report, developed the contract documents, and provided construction support services.
First exodermic deck to be designed with LRFD method.
Designed according to current seismic criteria.
Designed a lighter structure utilizing exodermic deck panels and isolation bearings.
Eliminated deck joints to minimize long-term maintenance.
Utilized the existing foundations to minimize impact to wetlands, residences, and landscape.
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