CLIENT
THE NEW YORK METROPOLITAN TRANSIT AUTHORITY (MTA BRIDGES & TUNNELS)
MAIN CONTRACTOR
YONKERS CONTRACTING COMPANY, INC.
STRUCTURAL STEEL FABRICATOR
MATSUO BRIDGE COMPANY, LTD
CONSULTANT OF CONTRACTOR:
ITENSOR BRIDGE ENGINEERING – AAI , LLC INTERNATIONAL ENGINEERS FOR TECHNICAL CONSULTATIONS
PROJECT COST:
US$ 550 MILLION (ALL PHASES)
Project Description
The third phase of the project involves replacing the roadway deck and barriers from the Randall’s Island toll plaza to the Manhattan approach and includes the Harlem River lift span and connecting ramps in Manhattan.
The replacement systems were preformed in panels of approximately 10ft 4in width (the width of one road lane), so that replacement minimized traffic impact. The work sequence of each panel consisted of a saw cutting existing deck; the lifting and removal of the existing deck; the cleaning and preparation of existing supports; and the placement, tying down and securing of the new panel. In total, over 1.6 million square feet of deck will be replaced under this project.
SCOPE OF WORK INCLUDED
IETC’s scope of work, which required referencing almost 1,000 as-built drawings and shop-plans of the
original bridge built in the 1930’s, included producing:
- Fully detailed general layout and erection drawings detailing the retrofit steel onto the existing actual as-built bridge dimensions;
- Fully detailed fabrication shop details.
- Careful examination and consideration to the constructability of the detailed steel.
- Almost 400 fabrication drawings were completed to detail 5,000,000 lb. (approx. 2,265 tons) of
structural steel, in a period of 4 months.