This twin bridge, four-span, bascule bridge rehabilitation for the Florida Department of Transportation in the Village of North Palm Beach, is part of the first Construction Manager at Risk project for the state of Florida. The project consists of four major phases including approach span deck demolition and widening, a new traffic barrier, a new decorative railing, structural steel work, electrical upgrades, machinery work, a second-story control house addition, painting, and traffic maintenance. The machinery work included four new span locks, the removal of eight hydraulic cylinders, and the installation of four new modified Hopkins frames with eight new motors and pinions that were fabricated to mate with the existing, previously abandoned, racks.
To maximize the scope of rehabilitation work within the client’s restrictive budget, PCL worked with the Engineer-of-Record and client by performing options analysis, scope definition, and subcontractor solicitations. This approach maximized the amount of in-place work and provided shared cost savings at project completion.
The local community and the client wanted to limit the bridge closure duration for the complete mechanical and electrical replacements, and specifically requested no 30-, 60-, or 90-day closures. The PCL project team successfully accomplished the removal and replacement of the machinery and electrical components without an extended duration bridge closure by phasing the project and performing limited night bridge and channel closures coordinated with and granted by the Village of North Palm Beach and the United States Coast Guard.