Massachusetts Department of Transportation
For Immediate Release:
Wednesday, July 25, 2012
Michael Verseckes, 617-973-8290
AMESBURY – MAIN STREET OVER THE MERRIMACK RIVER
1ST LT DEREK S. HINES MEMORIAL BRIDGE
In accordance with the contract documents, MassDOT conducted a series of independent tests and inspections on July 18 of the mechanical and electrical operation systems for the newly constructed bridge carrying Main Street over the Merrimack River in Amesbury. The testing confirmed an alignment issue that results in a portion of the mechanical systems’ operation being out of tolerance with the contract specifications.
Based on the precision associated with the bridge’s gearing and drive system, the affected tolerances are in the range of several thousandths of an inch. The issue does not affect the safety of the bridge but is related to future wear and tear on the bridge’s mechanical system that if not addressed, could impact the structure’s service life.
On Tuesday, July 24, the Design-Build team met with MassDOT to present their plan to adjust the mechanical components to address this issue. MassDOT will expedite the review of the proposal to allow the contractor to implement the work as soon as possible. The contractor expects to begin preliminary work this weekend with the primary work commencing on July 30. The work is expected to be completed by August 6, at which time a follow-up inspection will be held to confirm that the bridge meets all of the contract requirements necessary to place it into full operation.
The bridge will remain closed to vehicular traffic while the work proceeds; however, the navigable channel will be available for marine traffic.