The Government is seeking qualified, experienced sources capable of performing construction services consisting of dredging and disposal of an estimated 1,200,000 cubic yards per year of sediment material from the federal navigation channels on the Ohio River (RM 0 – 981.0) and the pooled areas of tributaries; and the Upper Mississippi River RM 0.0 – 185.0.
The sediments consist of primarily medium to coarse grained sands with a d50 of 0.03 inch.
Dredging will occur in depths up to 33 feet (10 meters) below the water surface and in currents up to 5 knots.
The dredger shall meet the following criteria:
– Maximum draft of 7.5 ft; Minimum 20 inches inside diameter pump discharge;
– Minimum of 1700 horsepower on the main pump shaft;
– Minimum 300 horsepower on the cutterhead shaft which produces a minimum output through a pontoon pipeline of 200 feet to 3200 feet in length and a lift up to 16.5 feet.
More info
[mappress]
Press Release, December 7, 2012