New business relationships start here
Upper Rouge Tunnel CSO Control Project North Tunnel, Contract No. PC-763
generally includes, but is not necessarily limited to the following major components: A. Excavation and initial support of the DS-7 shaft located in Eliza Howell Park north of the intersection of Schoolcraft and Virgil. This shaft is 50 feet in diameter and is sunk to a depth of 177 feet, and will be used to launch the tunnel boring machine, for muck removal and materials conveyance during the construction of the North Tunnel. B. Excavation, initial support and final lining of 18,300 linear feet of tunnel from the DS-7 shaft to the DS-11 shaft located west of the intersection of Berg and Pembroke. The tunnel will be in rock approximately 150 feet below grade with a finished internal diameter of 30 feet.
