The bridge over the Miles River on Bridge Street will be closed for five days, starting on Columbus Day.
The project to replace the bridge’s old granite block culvert with a precast concrete box culvert began in July and was originally scheduled to be wrapped up by the end of September.
The bridge had been down to one-lane traffic for most of the project.
But the project took a dramatic turn last week as the contractor, UEL Contractors, Inc., was excavating the large rectangular granite retaining blocks to make way for the new culvert box to be installed. Workers found that the material used to support the bridge is irregularly shaped stone boulders that are cantilevered and interlocking, as seen in the attached pictures provided by Town Manager Michael Lombardo.
The project engineers said that removing the boulders will destabilize the bridge and likely cause the road to collapse. That led to the decision to close the bridge starting on Monday, Oct. 10 for five days. It is scheduled to reopen late in the day on Friday, Oct. 14.
The Hamilton Police Department is working with the contractor to develop a detour plan.