Alternative Delivery and Trenchless Methods Used to Install 60,000 LF of Pipe on the Bay Park Forcemain Project

The Bay Park Conveyance project is one of the largest current microtunneling and rehab projects in the United States. The completed project will convey treated water from the South Shore Water Reclamation Facility located in Nassau County, New York, which currently discharges an average of 50 million gallons per day (MGD) of treated water into Reynolds Channel, to the Cedar Creek Water Pollution Control Plant (WPCP) ocean outfall pipe. The 72″ pipe carrying treated water will be approximately 20–60 ft below the surface. This paper will focus on the 20,000 LF of microtunneling that was used to connect a 7.3-mi stretch of the aqueduct that was rehabilitated via sliplining as part of the project. Design–Build project delivery, pipe selection and design, and microtunneling construction methods will be discussed.