Zugerbergstraße Sewage Tunnel
Switzerland, Zug

To protect the old quarter in Zug (Switzerland) from possible flooding, a tunnel was driven from the Badi Seeliken to the Pulverturm. Tunnel excavation necessitated going up the hillside next to the casino at a gradient of up to 25 percent, under the municipal and canton library up to the Kirchstrasse at the Pulverturm.
A 14-tonne AVN was used in this 254-meter-long tunnel. With performances of up to twelve meters a day, the machine reached its destination on March 12, 2008.

Data Sheet

Country, Location

Switzerland, Zug






Soft ground
Lake marl, brook deposits, moraines

Tunnelling length

254 m

Machine Data

1x AVN Machine:
Diameter: 1,505 mm
Lining method: Pipe jacking
Cutterhead power: 145 kW
Torque: 250 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.