Dublin Port Tunnel
Ireland, Dublin
2002 – 2004

Two-thirds of Ireland's maritime trade is handled by the Port of Dublin. Thousands of trucks force their way through Dublin's city center every day. Planned is a tunnel to link the outer-urban highways and major roads directly with the port.

The S-194, a partial-face excavation machine, bored an initial section of the tunnel in 2002. After the work was completed, the machine was replaced by the Single Shield TBM S-193. Using these two different types of machine was the solution adopted by Herrenknecht to deal with the widely varying geological conditions along the tunnel route. Following the final breakthrough by the TBM in 2004, the tunnel was opened in December 2006.

The Dublin Port Tunnel

Data Sheet

Country, Location

Ireland, Dublin


2002 – 2004




Heterogeneous ground
Limestone, slate, boulder clay

Tunnelling length

5,105 m

Machine Data

1x Single Shield TBM:
Diameter: 11,770 mm
Lining method: Segmental lining
Cutterhead power: 3,200 kW
Torque: 9,370 kNm

1x Partial-face Excavation Machine:
Diameter: 11,770 mm
Lining method: Segmental lining
Cutterhead power: 2,400 kW

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.