Superior Street to close Wednesday for sewer work

Superior Street between Calhoun and Clinton streets, will close Wednesday, April 22, 2020, for construction of a 48-inch consolidation sewer. The closure includes the two western most lanes on Clinton Street, and is expected to last through mid-summer.

Clinton, at this intersection, will be restricted to the two eastern lanes heading south during this construction.

After this portion is complete, crews will move down the street, between Clinton and Barr Street to construct the final part of the consolidation sewer. That work will wrap up in the fall.

A consolidation sewer is a near-surface sewer that collects or consolidates the flow from existing sewer pipes. Currently, the combined sewage (sanitary and stormwater) in a large area of the central business district, from Baker Street to Superior, discharges 4.88 million gallons per year into the St. Marys River. Those discharges are spread out over 71 wet-weather events in an average year.

The Superior Street consolidation sewer, combined with other work improvements that will be completed by 2025, will reduce the overflows on the St. Marys by more than 90 percent.


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