Seattle, Washington
SR513 Montlake Bridge Mechanical Rehabilitation and Deck Replacement
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This bridge rehabilitation project was located at the historic Montlake double-leaf bascule bridge, originally completed in 1925 and spanning the Montlake Cut, adjacent to the University of Washington Husky Stadium and Medical Center in the heart of Seattle. Work included the replacement of the open grate steel deck, installation of new stringers in the bridge superstructure, bridge deck approach-span concrete repairs and asphalt overlay, bridge bascule counterweight balancing, and the replacement of portions of the mechanical center lock mechanisms.
Inherent to a 100-year-old bridge, unexpected challenges occurred throughout the project and required additional work scope. Marine traffic required Hamilton, at times, to be ready to draw the bridge on demand. The success of this unique project hinged on teamwork between the Hamilton, WSDOT, and various critical stakeholders such as King County Metro, the City of Seattle, the University of Washington, including the Medical Center and Sound Transit. WSDOT and Hamilton collaborated extensively to successfully manage every aspect of the project as the schedule, work activities, and traffic control were subject to change due to unexpected challenges. Hamilton adapted by adding a night shift, mentoring DBE firms, and re-sequencing work activities and material deliveries to accommodate the dynamic scheduling challenges and keep the project moving forward to completion. In addition, Hamilton surpassed the project’s 19% DBE goal by reaching 22.69 % DBE participation. |
Major Project Elements
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Award:
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