OTIE is currently lead designer on a Milwaukee Metropolitan Sewerage District (MMSD) wastewater construction project in the Milwaukee area. The primary goal of the project is to reduce the risk of overflows in the immediate service area. Over the last 10 years, the North 35th Street and West Roosevelt Drive intersection has been one of the most active overflow areas. The goal of reducing the excess wastewater level and recurrent flooding in the area is closer to its final goal.

Installation of the new 48-inch diameter MIS was recently completed. The new 48-inch diameter Metropolitan Interceptor Sewer (MIS) will redirect wastewater away from a bypass pump station (that will be removed as part of this project). The new 48-inch diameter sewer was installed by microtunneling, horizontally, over a distance of 3,100 linear feet and 90 feet below ground at its deepest point.

The construction contractor, Super Excavators of Menomonee Falls, WI, is now working on installing new manholes and will then connect the city sewers to the new MIS.