Bronx-Whitestone Bridge.

The Bronx-Whitestone Bridge connects the Boroughs of Queens and the Bronx of New York City carrying Interstate I-678 over the East River. The bridge was completed and opened to traffic in April 1939, and has undergone several major modifications since then. The bridge is comprised of a 2,300 foot main span and two 735-foot long side spans, and is supported by two main suspension cables. The wires are made of cold drawn high strength steel, which are zinc-coated.

BTC Scope:

BTC performed evaluations of the main suspension cables, utilizing the BTC method.

The cable Investigation comprises, wedging, inspection and sampling from eight (8) panels along the main cables, including:
• Wire sampling plan per the BTC method.
• Evaluation of remaining cable strength and residual life of cables, based on BTC method.

In an earlier Project in 2005, BTC performed an independent evaluation of the remaining strength of the main suspension cables of the Bronx-Whitestone Bridge, based on the BTC method. The 2005 evaluation was based on sample data from the 1998 & 2003 inspections.