This twin, precast segmental bridge project for the Florida Department of Transportation is 3,000 feet in length and spans 65 feet above the St. Lucie River in Stuart, Florida. With 17 separate, 180-foot spans erected in the span-by-span erection method, the project set a record for the longest bridge in the western hemisphere to be built using this technique.
Due to site and schedule constraints, PCL submitted a value-engineering change proposal to revise the method of erecting the segmental superstructure from balanced cantilever to span-by-span. Using this accelerated bridge construction (ABC) approach allowed the project team to avoid impacting conditions of the existing environmental and Coast Guard permits, reduce the project schedule by more than three months, and save money for the client by phasing the foundation and falsework construction. To add sustainability to the project, PCL created an inshore and offshore reef with the demolition materials from the existing bridge. The offshore reef material stacked more than 60 feet high, providing a great environment for marine habitat.
The American Association of State Highway and Transportation Officials awarded PCL and the client with the 1999 National Value Engineering Award for the most innovative proposal during construction.
Best in Construction, Major Bridge Category - Florida Transportation Builders' Association, Inc.
National Value Engineering Award - AASHTO Value Engineering Task Force
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