New Lock at the Soo Chamber Construction

The scope of this project consists of the construction of a navigation lock at the Soo Locks complex. The project area is located in Sault Ste. Marie, MI. The lock shall be of nominal 1200-foot length by 110-foot width primarily aligned with the existing Sabin Lock chamber. The major components of the lock construction include construction of cofferdams (sheet pile cells filled with aggregate and concrete) on the upstream and downstream ends of the Sabin and Davis Locks; demolition of the existing North and South Sabin Lock walls along with the existing filling and emptying system; rock excavation to widen and deepen the existing chamber; construction of new lock walls; rehabilitation of downstream approach walls; fabrication and installation of miter gates, culvert valves, and other ancillary items. To accomplish these major features, the scope will include the following items: set-up of on-site concrete batch plant and concrete delivery system; tremie concrete placements; mass concrete placements; structural concrete placements; dewatering of coffered areas; on-site placement of demolition material/excavated rock and soil; fabrication of structural steel components; environmental controls related to construction operations, instrumentation, electrical power and control systems, mechanical systems; four Lock Operations control buildings, and new lock testing/commissioning, and potential remediation of hazardous materials.

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.