RFK Bridge East River Suspension Spans Wind Retrofit and Structural Rehabilitation

Triborough Bridge and Tunnel Authority/MTA Construction & Development (TBTA/MTA C&D)

The Robert F. Kennedy Bridge (formerly the Triborough Bridge) is a vital piece of New York City’s highway infrastructure, connecting Manhattan, Queens, and the Bronx through a network of river crossings and connecting viaducts on Randall’s Island and Wards Island. Recent seismic and wind investigations revealed that the bridge’s East River Suspension Spans, which connect Queens and Randall’s Island, do not meet the wind speed criteria for aerodynamic stability and require structural rehabilitation. This Triborough Bridge and Tunnel Authority (TBTA) project will repair and upgrade the East River Suspension Plans, improving its stability and increasing motorist safety.

EnTech is performing Structural Health Monitoring for the project, as part of the preliminary design and RFP development stage, in advance of a planned design-build procurement. EnTech is maintaining the data logger, cabling, and sensor system to provide remote access of continuous digital monitoring and output data for bridge anchorages at Queens and Wards Island. EnTech is operating and maintaining instrumentation equipment on-site including ShapeArray accelerometer (SAA) and strain gauges (SG) and preparing monthly reports documenting the results of monitoring systems.

Key Services

• Structural Health Monitoring

• Geotechnical Instrumentation

• Geotechnical Monitoring