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Menomonee Special West

Location: Milwaukee, WI
Owner: Milwaukee Metro Sewerage District
Completed: December 2007

The Menomonee Special West Project included the installation of 669 lineal feet of 84” Hobas Pipe and 611 lineal feet of 30” RCP via Microtunneling; 2,300 lineal feet of 84” RCP via EPB TBM, and construction of 6 shafts using steel sheeting and liner plates. The 84” Microtunneling crossed under the Milwaukee River approximately 35’ below the water. The MTBM was able to launch in very high water pressure conditions, mine through the jet grout blocks, navigate through nearly zero blow count soils, and go through wood piling obstructions without any ground loss. Because of its proximity to the river – one of Milwaukee’s greatest natural resources – may environmental precautions and considerations were implemented on this project.  This project was completed on time, under budget, and with no harm to the river.