In the News
FST Wins ACEC-NH Engineering Excellence Award
March 19, 2015
FST's Turner Center Bridge Replacement Project in Turner and Greene, Maine won the American Council of Engineering Companies of New Hampshire (ACEC-NH) Engineering Excellence Award for Structural Systems. The winners were announced at the ACEC-NH annual EEA luncheon in Manchester, New Hampshire, on March 19, 2015. FST Director and head of the company's Northern New England Division, Bill Moore, was in attendance to accept the award, along with Associate Tom Densford and Principal Engineer Mark Debowski. Densford was FST's lead designer and project manager and Debowski was the project engineer.
The Turner Center Bridge project is notable for its use of a haunched steel girder design. The project is also one of the first design-build bridge replacements commissioned by the Maine Department of Transportation, and the design-build proposal from the team of Reed & Reed/FST was $1 million lower than the next-lowest bid. The project was featured in the October-November issue of Maine Trails magazine.
The new bridge design uses two-span, horizontally curved haunched steel girders with a total length of 480 feet. The haunched girder design, coupled with the vertical curve on the bridge, minimized the extent of the approach work and reduced project costs while satisfying the clearance above the design flood level. The substructure was designed for ice loading due to the ice floes that are common in the river at this location. The foundations consist of spread footings on tremie seals that extend to bedrock and required cofferdams up to 35 feet in depth.
In August 2014, the communities celebrated the official opening of the new bridge with a ribbon-cutting ceremony.