Portfolio : Construction
Fremont Bridge Replacement/Upgrade
Location:
Seattle, Washington
Description:
The Fremont Bridge which was opened on July 4, 1917 required seismic retrofitting adn upgrading including the replacement of existing approaches. Just 30 feet above water, the bridge rises for marine traffic on average 35 times per day making it one of the busiest bascule (draw) bridges in the world. Due to the complexity of the project, Sicklesteel provide a lift director to assist the contractor from the planning stages through to the implementation of the lift plan. The development of the lift plan took into consideration the restricted access and crane sizing by manipulating the sequence in order to maximize utilization and minimize cost while keeping a focus on safety and the continued operation of the bridge. On the project, Sicklesteel utilized a DEMAG AC1600 (650 ton), a DEMAG AC1300 (500 ton), DEMAG HC1020 (450 ton), and a DEMAG AC615S (280 ton) to set the 190,000# + girders as tandem crane lifts and individual lifts. Sicklesteel completed each phase ahead of schedule and under budget.
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