New Lock at the Soo, New Third Lock

The scope of this project includes, but is not limited to, the following: demolition of an existing lock chamber and construction of a new 110’ x 1200’ lock chamber including all operating machinery and auxiliary structures. Subcontracting opportunities exist in the areas of: Electrical systems, mechanical systems, hydraulic structures fabrication, structural steel fabrication, pre-engineered metal buildings, miscellaneous metals fabrication, commissioning, testing, piping systems, painting, architectural systems, drilling, grouting, and dewatering. This contract will contain a base bid item and seven optional contract line items (CLINS). The major components of the base include mobilization, batch plant set-up, cofferdam construction, relocations, care and diversion of water necessary to get the area to a dewatered state; construction of a New Power Plant Bridge; construction of a new shaft, Shaft 6; installation of Struts to stabilize the existing Lock walls; demolition of the existing Sabin Lock; excavation of rock and placement of a mud mat; construction of the Wide Wall Monoliths; fabrication and installation of the Upstream Ship Arrestors; fabricate, deliver, and install metals including miter gates and culvert valves; construction of phase one of the New Pump Well (including the demolition of the existing Davis Lock floor, rock excavation, , and construction of concrete structure to the operating floor). Option 1 includes the construction of the majority of Chamber Wall Monoliths, including the installation of embedded and post installed metals. Option 2 include the completion of the New Pump Well, including installation of all equipment, construction of the operating building, and rehabilitation of existing Davis and Poe pump wells. Option 3 includes the installation of air, steam, power, and hydraulic piping; commissioning and testing the miter gates, culvert valves, and Upstream Ship Arrestors; finalizing the site work; constructing the Lock Floor; and removal of the coffer cells. Option 4 includes installing solider pile and lagging, tie-back system, concrete cap, electrical infrastructure and bollards on the Downstream Approach Wall and East Center Pier. Option 5 is the installation of the Hands-Free Mooring system consisting of total of seven units on the North and South Walls including installation of dynamic units, cabling, equipment, associated software. Option 6 is the fabrication, installation, testing and commissioning of the Downstream Ship Arrestors. Option 7 includes excavation of rock and construction of a hybrid wall for the Alligator's Mouth expansion of the mooring area. The anticipated duration for the base is 1642 calendar days after the notice to proceed, an additional 365 calendar days will be provided if Option 1 is exercised and an additional 365 days will be provided if Option 3 is exercised. The Government intends to exercise all options. Options 4, 5, 6, and 7 are the last options to be exercised, and may be exercised as late as 1287 calendar days after the notice to proceed. As of April 19, 2023, this project has been awarded to a Joint Venture Construction Management Team. Minor mobilization and related minor construction are underway, but the actual start of construction is not anticipated until second quarter 2023. The earliest that winter thaw will allow construction is spring 2023.

Division 02 -	Existing Conditions, Subsurface Investigation.
Division 31 -	Earthwork, Site Clearing, Grading, Excavation and Fill, Subgrade Preparation, Excavation, Shoring, Tunneling and Mining, Tunnel Excavation.
Division 35 -	Waterway and Marine Construction, Dam Construction and Equipment.