Notable Projects

Milwaukee County Bradford Beach and McKinley Beach
Milwaukee, WI

Bioretention/Rain Gardens in County Parks
Client: Milwaukee County

(Subconsultant to)
Earthtech/Bradford, Bernie Michaud, P.E.

Description
Bradford Beach is the popular lakefront destination for Milwaukee. Beach closings after storm events lead to testing in attempt to locate the source of E-coli bacteria in the water and beach sands. Further testing found E-coli bacteria in the storm sewer along Lincoln Memorial Drive, adjacent to Bradford Beach.

Our Solution
SSE worked as a subconsultant to Earthtech (AECOM) assisting in the design of Infiltration basins at the storm sewer outfalls along Bradford Beach. Sand dunes with native beach plantings were installed at the outfalls, allowing the stormwater to be infiltrated through beach sands rather than flowing directly toward the waters edge.

Drainage from Lake Park on the bluff above Bradford Beach was found to also contain E-coli bacteria. It was unknown whether the source was wildlife, or domestic animals since the park is a destination for dog-walkers in the area. SSE designed three bioretention/raingardens in Lake Park to filter and infiltrate the runoff along the walkway in the park. Bioretention/raingardens appear to be a depressed area with flowers and native plants from the surface, but below ground they have engineered soil mixes allowing for stormwater runoff to soak in to the ground, and a perforated underdrain that picks up residual moisture to drain toward the storm sewer. The combination of native plants, engineered soil (compost, sand and topsoil) and the underdrain, allow for filtering of pollutants from the stormwater before discharging it to Lake Michigan.

Notable Project Photo Gallery
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