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Dugway West Interceptor Relief Sewer Project

Location: Cleveland, OH
Owner: Northeast Ohio Regional Sewer District
Completed: December 2015

On October 3, 2013, the Northeast Ohio Regional Sewer District awarded the $57,479,355 Dugway West Interceptor Relief Sewer (DWIRS) project to Walsh/Super Excavators, JV. The DWIRS project is part of a network of sewers and tunnels being constructed to drastically reduce combined sewer overflows.  Super Excavators focused on the microtunneling work, which consisted of 7,000 LF of 72-inch RCP relief sewer, mining through shale rock of approximately 915 LF, and trenchless construction of approximately 4,000 LF of 48-inch RCP sewer. In total there were 17 separate drives, ranging from 25 – 32 feet deep. Nine launch shafts and 11 receiving pits were constructed.  

Joining an elite group of North American microtunneling contractors who have accomplished this feat, SEI proposed a VECP to complete a 700 LF drive of 72-inch curved MTBM drive during the summer of 2015. It was the first curved microtunnel completed in the Midwest region.