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Construction Services for Confined Aquatic Disposal Cell Construction and Maintenance Dredging of the Providence River Federal Navigation Project, Providence, Rhode Island.

Description

The U.S. Army Corps of Engineers, New England District is issuing a Sources Sought Announcement for the upcoming dredging project located in Providence, Rhode Island. This announcement is to determine the interest, availability and capability of Small and Large Business concerns as described below. The NAICS code for this procurement is 237990. The solicitation for this project is anticipated to be issued on or about 15 March 2027. The construction will begin in September 2027 and is expected to take approximately 2 years to complete. The estimated construction cost is between $80,000,000 and $100,000,000. The Providence River Maintenance Dredging project involves two major sequences of dredging and disposal activities. The first work sequence will be the construction of a new Confined Aquatic Disposal (CAD) cell adjacent to the Providence River. The second work sequence under this contract will include maintenance dredging of the Providence River and Harbor Federal Navigation Project (FNP) to its authorized depths and dimensions. The proposed work consists of mechanically dredging approximately 5,500,000 cubic yards (cy) of material using closed clamshell buckets for both major sequences of work over the course of two years. The new CAD cell will be in the Edgewood Basin area located adjacent to the Providence FNP (hereafter the �Edgewood Shoals North (ESN) CAD cell�). To access the CAD cell area, an access channel will be dug between the Providence FNP and the CAD cell area. The access channel will be approximately 100 ft wide and -25 MLLW deep. The CAD cell will have surface dimensions of approximately 1000 ft. by 1000 ft. and be dug to a depth of -60 MLLW. The material excavated to build the access channel is generally a mix of sandy silt and shell fragments. Within the CAD cell area the material is generally described as soft grey to black organic silt with some layers of firm sandy silt and some shell fragments and coarse-grained material. Material excavated from the access channel and CAD cell area will be placed at four locations: Port Edgewood Basin, the Fox Point Reach CAD cells, Prudence Island Disposal Site, and the Rhode Island Sound Disposal Site. This work consists of mechanically dredging approximately 3,200,000 cy to construct thew ESN CAD cell and its access channel, which must be completed before maintenance dredging of the FNP can begin. The maintenance dredging proposed work consists of mechanically dredging the Providence River FNP to the full -40 MLLW depth plus 2-feet of allowable overdepth. 2,300,000 cy (1,200,000 cy required depth, with up to 1,100,000 cy overdepth) of shoaled material consisting generally of poorly graded medium to fine sand with silt. The dredge material from this maintenance portion of work will be placed in the ESN CAD cell. Environmental coordination and permitting is being completed by the U.S. Army of Engineers, New England District. All dredging and disposal activities for this project have presc…