U.S. Army Corps of Engineers has unveiled details about the Miami Harbor dredging project (Phase 3).
The project work consists of construction dredging to provide for the Federally authorized project improvements and Local Sponsor Berthing Areas of Miami Harbor, Florida.
To facilitate the authorized project, the Phase 3 deepening contract will dredge the following features:
(1) Cut-1 to a depth of 52 feet MLLW plus one foot allowable overdepth, including the widening of the outer portion of the cut from 500 feet to 800 feet;
(2) Cut-2 to a depth of 52 feet MLLW plus one foot allowable overdepth;
(3) Cut-3 to a depth of 50 feet MLLW plus one foot allowable overdepth, including a new turn widener at the intersection of Cut-3 and the Fisher Island Turning Basin;
(4) Fisher Island Turning Basin to a depth of 50 feet MLLW plus one foot allowable overdepth, including an expansion of the turning basin from 1200 feet to approximately 1500 feet;
(5) Fisherman’s Channel to a depth of 50 feet MLLW plus one foot allowable overdepth, including a shift of the channel by 60 feet to the south and the widening of the channel by 40 feet to south from 400 feet to 440 feet;
(6) Lummus Island Turning Basin to a depth of 50 feet MLLW plus one foot allowable overdepth, including a reduction of the turning basin from 1600 feet to approximately 1500 feet; and
7) Port of Miami Berthing Areas along Fisherman’s Channel to a depth of 50 feet MLLW plus one foot allowable overdepth, including an expansion of the berthing areas by 60 feet south into the existing Federal channel.
Total quantity to be dredged from the Federal Channel is approximately 5 million cubic yards (cy) and from the Berthing Areas is approximately 200,000 cy.
All dredged material will be placed in the ODMDS located an average of 4.5 statute miles from the dredging location, the Julia Tuttle Seagrass Mitigation Area located an average of 7.0 statute miles from the dredging location, and the two Offshore Artificial Reef Areas located an average of 2.4 statute miles from the dredging location.
Magnitude of construction is between $100,000,000.00 and $250,000,000.00.
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Press Release, November 22, 2012