Harbor Siphon Tunnel
Services:
Challenges Solved
The New York City Department of Environmental Protection (NYCDEP) constructed a water siphon to replace two aged siphons beneath Upper New York Bay between Bay Ridge, Brooklyn and Stapleton and Tompkinsville, Staten Island. The project was stalled in October, 2012 when the tunnel was flooded and the TBM was damaged.
MRCE performed subsurface investigation, design the slurry wall and bracing for the launch shaft and designed a rapid deployable tunnel plug to prevent future tunnel flooding.