Bergen Basin Sewer Reconstruction Project
United States, New York City, NY
2015 – 2016

The Bergen Basin on the northwestern edge of John F. Kennedy International Airport is considered one of the most polluted bodies of water in New York City, as after heavy rainfall untreated sewage is discharged into it from overloaded sewers. New York's Department of Environmental Protection therefore ordered the construction of additional pipeline capacities so the wastewater could be reliably carried to the treatment plant.

For three pipe jacking sections the contractor used AVN technology from Herrenknecht to safely handle the challenging ground conditions. Particularly tricky was the crossing of the Belt Parkway, one of the vital traffic arteries for the inhabitants of Brooklyn and Queens. An existing sewer line had to be passed safely at a distance of only 25 centimeters.

The two AVN machines from Herrenknecht proved themselves with their 90 and 2 x 105 meter drives 3 – 4.5 meters below the water table in partially sandy ground. In December 2016 the last of the three drives was successfully completed.

Data Sheet

Country, Location

United States, New York City, NY


2015 – 2016




Soft ground
Sand, clay, gravel

Tunnelling length

300 m

Machine Data

1x AVN Machine:
Diameter: 1,747 mm
Lining method: Pipe jacking
Cutterhead power: 132 kW
Torque: 260 kNm

1x AVN Machine:
Diameter: 1,155 mm
Lining method: Pipe jacking
Cutterhead power: 75 kW
Torque: 90 kNm

Your contact person Contact us

Steffen Dubé President and General Manager Herrenknecht Tunnelling Systems USA Inc.
Gerhard Goisser Commercial Manager Herrenknecht Tunnelling Systems USA, Inc.