For immediate release: Sept. 10, 2015
ICONIC BRIDGE TOWERS CONTINUE RISING Next week, the new bridge’s towers will continue rising toward their ultimate height of 419 feet, thanks to self-climbing jump forms. The state-of-the-art forms enable Tappan Zee Constructors, LLC (TZC) workers to build the towers in segments that progressively jump up from the foundations to their full height. Within the jump forms, workers assemble steel reinforcement cages that are then encased in concrete, one segment atop the previous one and so on. Eight towers will be constructed on the project’s football-field-long main span pile caps over the coming year, as seen in this animation. Structural Steel Installation The installation of girders over the river will continue next week and beyond. Smaller girder sections will be lifted into place by cranes from the Rockland trestle near the South Nyack shoreline. Ironworkers then bolt together the steel-blue girders and cross beams that support the new bridges concrete road deck. The I Lift NY super crane will continue placing larger girders, averaging two placements a week. A total of 31 miles of steel girders cumulatively weighing more than 100,000 tons will be installed for the new twin-span bridge. All-Electronic Toll Collection Gantry Work Specific lane and ramp closure times are listed in the chart below.
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Project Update: ICONIC BRIDGE TOWERS CONTINUE RISING
September 17, 2015 by