ABSTRACT

ABSTRACT: Over 440,000 square feet of deck on the Newburgh Beacon Bridge/South Span, which spans the Hudson River and carries three eastbound lanes of I-84, will be replaced with precast, high performance, concrete filled, galvanized steel grid panels for the entire 7,789 foot length of the structure. The deck replacement will be constructed in stages. Over 1,900 panels, topped with a 1" polyester concrete overlay will replace the existing concrete deck. An innovative aspect of the design involves the use of steel haunches to support the deck on the existing girders/stringers. The top flanges of the existing stringers will be spliced, providing continuity at 28 relief joints. The project also includes the modifications of existing finger joints, major electrical work, new sign structures, new drainage systems and 15,680 linear feet of new precast concrete barriers. This paper describes the bridge and its history, the development of alternatives and selection of deck type, innovative details and construction stages.