Sheet pile installation/construction at LD4, LD6, and LD10

The U.S. Army Corps of Engineers (USACE), St. Paul District (MVP) has a requirement to install sheet pile at 2 lock and dam (LD) sites using AE prepared designs and specifications. The 2 sites of work are LD4, LD6, and LD10. Here are the locations for each project: LD6: The auxiliary lock bay is located to the riverside of the main lock, which is on the Wisconsin side of the Mississippi River. LD6 is located near Trempealeau, WI (Trempealeau County), and is accessible from Wisconsin State Highway 35 via Fremont Street. LD10: The auxiliary lock bay is located to the riverside of the main lock, which is on the Iowa side of the Mississippi River. LD 10 is located at Guttenberg, IA (Clayton County) and is accessible from Prince Street and S. River Park Drive. Construction at each site will create an auxiliary lock bay closure upstream of the existing auxiliary miter gates. The closure will serve as a new damming surface for the structure. The new closure will consist of two parallel rows of sheet pile secured with tie-rods with granular material filled in the space between the sheets. Permeation grouting will be performed for seepage control measures. Timber fenders will be attached to the upstream face of the closure, and an access ladder will be installed as part of the project work.

Dam/Tunnel, Renovation.

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.