• Corporate HQ, NY
  • Melville, NY
  • Iselin, NJ
  • Ossining, NY
  • Mount Laurel, NJ

Water Street Water and Combined Sewer Lines


The reconstruction of combined sewers on Water Street in the historic Down Under the Manhattan Bridge Overpass (DUMBO) district in Downtown Brooklyn extends beneath local streets from the Brooklyn to the Manhattan bridges. This was formerly a manufacturing area that has been transformed into an urban neighborhood. To accommodate unprecedented growth in the area, the NYCDDC undertook this $20 million project to reconstruct and upgrade water supply sewer facilities and thereby renovate the underground infrastructure. HAKS provided resident engineering inspection services and supervised the construction for the NYCDDC, the client, and the NYCDEP, the owner.

A new steel trunk water main was installed in Water Street, along with distribution mains and fire hydrants throughout the area. Combined sewers were replaced with reinforced concrete pipe (RCP) sewers supported on pile. The contractor used a combined rather than separate trench to install the trunk water main and RCP combined sewers due to the limited space and to minimize the impact on residents, businesses and buildings. Because of the proximity of combined sewer installations to historic buildings, continuous flight augured piles were chosen over timber piles to reduce or eliminate vibrations, which proved to be an inexpensive installation procedure for combined sewers in a constrained construction site. Aesthetic elements included granite curbs, granite slab crosswalk and pigmented sidewalks along with a thermal-finished granite block bike lane.

The project received the 2012 ACEC New York Silver Award.