Graving Dock No. 3 Permanent Repair - Groton, Conn.
In January 2005, General Dynamics awarded Kiewit a $38 million contract to provide long term repairs to Graving Dock #3 at the General Dynamics Electric Boat facility. A sheetpile cell catastrophically ruptured during dewatering operations at the dock in May 2004. Kiewit stabalized the cell under an emergency contract and was awarded this follow-on project for its impressive performance.
The project included construction of tied-back concrete retaining walls in front of the existing sheetpile wall. These walls perform the function of the cellular sheetpile and mitigate any future threat of cell failures. Other work includes construction of east and west cast-in-place concrete platforms, elevator installation, walkway and mechanical work.
The graving dock was watered up and ready for use in February 2006.