IN CONSTRUCTION

Phase BU-1D Burlington Currently In Construction

Phase BU-1D CONSTRUCTION CAM

-- UPDATE --
August 1, 2022

The final phase the Mouse River Enhanced Flood Protection Project for the City of Burlington began this spring and has been fully underway throughout the summer. Phase BU-1D is located mainly along Park Road and connects back to the BU-1C levee system at the Burlington Recreation Facility. Along with levee construction, this phase required multiple utility relocations around the levee. Like the other Burlington phases, this phase will also feature a seepage cutoff wall which provides a hydraulic barrier beneath the levee as a means to control groundwater seepage beneath the levee.

The Contractor, Bluestone Construction, Inc., begin demolition and clearing activities as soon as conditions allowed this spring including the closure and removal of Park Road. Once the levee construction is complete, Park Road will be built back in the same location but will be raised and will sit atop the levee.

Utility relocations were critical to the construction schedule, as the levee alignment needed to be cleared allowing for the installation of the seepage cutoff wall. Municipal utility work included rerouting of water, sanitary sewer, sanitary sewer forcemain, and storm sewer. Franchise utility work included rerouting of electrical, natural gas, and communication lines.

Once the utility relocations were complete, the base section of the levee was constructed with imported fill material. The levee base serves as the working pad for construction of the seepage cutoff wall. The seepage cutoff wall will be installed utilizing a one-pass trencher that mixes cement, slag, and bentonite with in-situ soil material in place without removing material from the trench. Like the walls constructed in previous phase for Burlington, the seepage cutoff wall is located along the centerline of the new levee and extends from the base of the levee prism to depths that range between 30 to 50 feet.

Levee construction is required to be completed in 2022 and would effectively complete the flood protection system for Burlington. Other items required to be completed in 2022 include all utility work, seepage cutoff wall, and the reconstruction of Park Road which will include new curb, gutter, and asphalt. Final restoration, landscaping, and seeding will continue into the 2023 construction season.
 

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