The purpose of this project, along with project W20017, W20028, and W20029, is to protect an estimated 62 structures from the one percent annual probability floodplain along the Menomonee River in the Western Milwaukee corridor. These projects are a component of the Phase II Watercourse Management Plan for the Menomonee River Watershed, which identified overbank flooding in the vicinity of West State Street on the west side of Milwaukee. This project will complete the levee system in the corridor that starts just west of Hart Park at West State Street at the upstream end and extends east to US Highway 175. The project scope is to design and construct a continuation of the floodplain levee and floodwall along West State Street, east from the N. 59th and State Pump Station to tie in to high ground just east of the USH 175 overpass. Approximately 2,000 feet of earthen levee and 1,200 feet of floodwall will be designed and constructed under this project, as well as 360 feet of 90" storm sewer with inlet and outlet structures. The increase in total project cost is due to additional planning level labor costs to reflect additional survey effort and an updated cost estimate to both complete a levee and floodwall system between 59th and State and the existing levee at the former Central Redi-Mix site, and to address flood risk reduction for nine structures no protected by the levee system. Additional O&M will be required for vegetation maintenance after the five-year maintenance schedule post-construction (estimated as 2026) occurs. This project will add additional levee and floodwall lengths to the District's infrastructure which will require inspection and maintenance, starting no earlier than 2022.
As of September 17, 2024, this project is under construction.
.webp)
