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Dredging Construction Project Lead, Concord, MA 01742   (Middlesex County)

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Reported 01/21/2019 12:00 AM
Project Title

Construction Services for Maintenance Dredging of Hampton Harbor Federal Navigation Project, Seabrook and Hampton, New Hampshire.
Physical Address View project details and contacts
City, State (County) Concord, MA 01742   (Middlesex County)
Category(s) Heavy and Highway
Sub-Category(s) Dredging
Contracting Method Competitive Bids.
Project Status Accepting Letters of Interest
Bids Due View project details and contacts
Estimated Value $1,000,000 to $5,000,000
Plans Available from Federal Agency
Owner View project details and contacts
Architect View project details and contacts
Description The Hampton Harbor project consists of hydraulically dredging the Federal Navigation Project (FNP), which includes an 8-foot deep Mean Lower Low Water (MLLW) entrance channel, 8-foot deep MLLW inner channels, an 8-foot deep anchorage on the Seabrook side, and 8-foot and 6-foot deep MLLW anchorages on the Hampton side, plus an authorized 1 foot of overdepth. Additionally, the proposed work involves maintenance dredging of the State of New Hampshire's 6-foot MLLW anchorage, plus authorized overdepth. Approximately 110,000 cubic yards (CY) of required dredging, with another approximately 40,000 CY of 1-ft allowable overdepth dredging would bring these areas back to their authorized dimensions. Sandy shoal material dredged from the mouth of the river will be placed along adjacent beaches with a pipeline, to include areas of Hampton Beach, Seabrook Beach, and an area beneath the southern end of the RouteA 1A bridge. Additionally, up to approximately 10,000 CY yards of sand will be placed behind an existing composite sheet pile wall built in 2005 to protect the middle ground sand flat. The work in this area will require significant coordination around the tide cycles.
Details
Division 35 - Waterway and Marine Construction, Waterway and Marine Construction and Equipment, Dredging.
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Project Documents
 Engineered Spec Sheet
 Architectural Plans
 Other Documents