Northeast
Jamaicaway Towers Parking Garage
P.J. Spillane engaged SGH to develop and design means and methods to provide temporary support while three columns supporting the three-level concrete garage structure were removed and replaced.
Boston, MA
Central Artery Tunnel Project Leakage Investigation
Scope/Solutions
The Central Artery/Tunnel (CA/T) Project relocated Boston’s elevated Central Artery below ground. Systemic water leakage at the tunnel roof to slurry wall intersection created a long-term corrosion threat to the roof girders and caused widespread ice buildup at the roof level in the winter. SGH investigated the causes of leakage and assisted Modern Continental Construction (Modern) with locating and quantifying the leakage as part of their remediation efforts.
SGH reviewed project documents, conducted a field investigation, and determined that the leakage was inherent to the slurry wall system. We assisted Modern with developing methods to address the leakage and presented our findings to help the associated parties reach resolution and move forward with repairs.
During the repair phase, SGH supported the system-wide observation of each roof bay’s condition. We documented existing conditions and noted leakage, if any. SGH designed repairs to mitigate leakage and strengthen certain areas of the panels. We also helped Modern address special conditions that arose during the repair work and evaluated the repair performance over time.
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Project Summary
2005
Completion Date
Solutions
Failure Investigation | Repair & Rehabilitation
Services
Structures
Markets
Infrastructure & Transportation
Client(s)
Modern Continental Construction
Specialized Capabilities
Repair & Strengthening
Key team members
Additional Projects
Northeast
General Edwards Bridge
The General Edwards Bridge is a multiple-span steel-girder bridge over the mouth of the Saugus River where it flows into the Atlantic Ocean. In 2003, a portion of concrete fell from the counterweight into the water. SGH performed a condition assessment and designed emergency and permanent repairs.