Acrow maintains traffic flow during historic bridge refurb
Acrow Bridge has installed a modular steel structure to maintain traffic flows during the restoration of the historic Cradock Bridge in Medford, Massachusetts.
The bridge, originally built in 1637, was rebuilt in 1880 and rehabilitated in 1934. Massachusetts Department of Transportation (MassDOT) determined several years ago that the bridge was structurally deficient and added it to the list of state-owned bridges to be repaired under its Accelerated Bridge Program.
The work on the stone arch bridge is to include demolition and rehabilitation of three concrete piers underneath the structure and installation of renewed stone archwayss. Remnants of an abandoned dam structure will be renovated to restore full flow of the river. It is anticipated that the project will be completed in November 2019.
Acrow’s two-lane detour structure has a length of 133’10” at the centerline and a width of 30’. Two of the original bridge’s four lanes are closed during the rehabilitation and it was critical to make provision for traffic in excess of 16,000 vehicles per day including almost 300 buses.
The bridge was purchased by MassDOT, which will reuse the components after the completion of the job. The design engineer is Aecom and the contractor is R Zoppo Corporation.
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This article was published on 25 Aug 2016 (last updated on 25 Aug 2016).