ORTHOTROPIC DECK REHABILITATION AT THROGS NECK BRIDGE 

Project Title and Location:

TN-82, Orthotropic Deck Rehabilitation at the Throgs neck bridge    

Services:

Investigations

Study and Analysis

Design Reports

Preliminary/Final Designs

Contract Documents

Cost Estimates

Construction Schedule

Permits

Project Completed:  2003

Client:

MTA Bridges and Tunnels                          4260 Throgs Neck Expressway Bronx , NY   10465-3831

Reference:

Robert Kushmock, P.E.

(718) 904-4346

The Throgs Neck Bridge is a heavily traveled, 11,000-foot-long, suspended span bridge, connecting Bronx and Queens . Existing construction varies, and consists of a 1,800 feet main span, 555 feet side spans and approach spans on both sides.

Scope of work included design for rehabilitation of Orthotropic deck and its support system under project TN-82.  The rehabilitation design addressed chronic problems associated with floorbeams, sub-floorbeams, and deck rib connections to the sub-floorbeams.  A detailed and complex structural analysis was performed to analyze the existing structural system to determine the cause of cracking in steel support system and to propose the most suitable and economic solution.  Construction schedule and cost estimate were prepared for this project.  Maintenance and protection of traffic plans were prepared as part of the contract design and specifications.

This project was located on Throgs Neck Bridge and provides us with intimate knowledge of bridge structure, bridge operations and issues which may be encountered during work at this facility.