The 18,00ft-long Euclid Creek Tunnel is located 190 to 220ft below ground, with a finished diameter of 24ft. It will have the capacity to hold 61 million gallons of combined stormwater and wastewater. Construction began in 2011 and finished in 2013.
Originally a $198 million project, is the first in a series of storage tunnels constructed as a part of Project Clean Lake, the sewer district’s 25-year, USD 3bn program reduce CSO discharge in local bodies of water.
"Our engineering and construction team worked diligently to complete this project under budget," said Kellie Rotunno, Chief Operating Officer, "The Euclid Creek Tunnel sets a new financial benchmark as we continue to identify cost-savings and save our customers money."
The tunnel will be fully operational upon completion of the Tunnel Dewatering Pump Station in 2016.
According to NEORSD the project garnered several firsts for the sewer district and the tunnelling industry:
First in World:
- One-pass tunnel excavation/lining process in rock
- Utilization of plastic fibers for concrete reinforcement
- U.S. Record: Deepest secant piles with excavation extended beyond tip
