June 2019
Volume 71    Issue 6

Final design of the River Des Peres tunnel in St. Louis, MO

Mining Engineering , 2019, Vol. 71, No. 6, pp. 105-105
Pride, Patricia; Robison, Mike; Bergenthal, Jon; Klecan, Wojciech


The Lower and Middle River Des Peres (LMRDP) CSO Storage Tunnel is the largest single component of Metropolitan St. Louis Sewer District’s (MSD) CSO control system improvements planned to meet consent decree requirements for MSD’s Lemay Service Area. The 13.7-km (8.5-mile) long, deep, hard rock tunnel will have a finished diameter of 9.1 m (30 ft). Beginning at the Lemay Wastewater Treatment Plant (WWTP), the alignment follows the channelized River Des Peres to the outfall of the existing Forest Park tubes, as indicated in Fig. 1. 

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