Brook Road over Beaver Dam Brook

HSH worked with the Town of Plymouth to repair a bridge structure located on Brook Road over Beaver Dam Brook in Plymouth, Massachusetts. The existing bridge structure, originally constructed in the 1800s and reconstructed in 1926, is a single-span bridge supported on stone masonry abutments that had been long posted and closed to traffic since 2021. A replacement option was first proposed by another consultant, but was not favorably received by the public due to the proposed size and the Right of Way (ROW) required to replace the structure to current standards. The Town asked HSH to evaluate if there was another alternative for the existing structure. HSH evaluated whether a bridge preservation project would be suitable for this location.

HSH recommended the current bridge structure be repaired by replacing the two deteriorated exterior beams and portion of the concrete deck, adding cover plates to the existing interior beams, replacing the existing guardrail, and repositioning the location of the existing water line. The repair would eliminate the need for ROW impacts, minimize environmental permitting, and would maintain the aesthetic appearance of the existing structure.

The bridge preservation was completed in June 2024 and is now open to traffic with no weight restrictions.