Contract Awarded for Corps Island Dredged Material Unloading Project

The U.S. Army Corps of Engineers, St. Paul District, awarded a $7.475 million contract September 24, 2018, to Dubuque Barge & Fleeting Services, Co. to carry-out a Corps Island Dredged Material Unloading project.

The project involves unloading approximately 500,000 cubic yards of dredged material from Corps Island, located in Pool 3 of the Mississippi River, near Diamond Bluff, Wisconsin.

The contractor is removing the material by mechanical and/or hydraulic means.

History

Corps Island was endorsed for use as a dredged material placement site by the River Resources Forum in December 1995, as recommended in the 1995 Lower Pool 3 Reconnaissance Report prepared by USACE. The report recommends that channel maintenance material be placed on Corps Island until site capacity is reached – approximately 500,000 cubic yards – then transferred (unloaded) to an upland placement site.

Since 1995 Corps Island has been used to manage more than 1 million cubic yards of dredged material. To date, there have been 24 placement events and 2 major site unloads in 1998 and 2011.

Project

In November 2017 the St. Paul District began to prepare contract plans and specifications for the third major site unload of Corps Island. It was anticipated that approximately 500,000 cubic yards of material would need to be unloaded. The contract was written to give the awarded contractors flexibility with how material could be removed from Corps Island, allowing mechanical, hydraulic or a combination of both.

USACE is currently establishing permanent placement sites via long-term Dredge Material Management Plans. However this work has not been completed in Pool 3, resulting in an immediate need to unload Corps Island.

Work is anticipated to begin in the spring of 2019 and be complete by December 2019.

 

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