Cashman Dredging and Marine Contracting Company LLC of Quincy Massachusetts was awarded a $5280242 New England Engineer Division contract for maintenance dredging of part of the Mystic River Federal Navigation Project in Groton and Stonington Connecticut. The state of Connecticut is funding the project. The contract was awarded on September 30. Construction is scheduled to start on or about November 3 and will take about five months to complete.
The Mystic River Federal Navigation Project in Groton and Stonington consists of a 15-foot channel 125 feet from the Sound up to the railroad bridge then 100 feet wide up to the U.S. Route 1 highway bridge; a 12-foot channel above the highway bridge to the upper wharves at the Seaport Museum; a nine-foot by 8.5 acre anchorage in the harbor north of Mason Island; and a nine-foot turning basin above the railroad bridge.
The 12-foot channel was last maintained in 1941. Dredging of the other project features was last accomplished with the improvement work completed in 1957.
Project Manager Jennifer Flanagan of the Corps’ Programs and Project Management Division in Concord Massachusetts said the work would entail removing about 250000 cubic yards of material.
A mechanical dredge will remove shoals from all areas of the FNP and the material will be placed in scows and transported to the New London Disposal Site or the Rhode Island Disposal Site for placement.