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Herren Tunnel
Germany, Lübeck
2002 – 2003

The Herrenbrücke Bridge, which bridged the Trave River in Lübeck, had to be replaced, firstly, because it had reached the limits of its capacity and, secondly, because its operating license had expired. It was decided to bore a tunnel (a twin tunnel, 2 x 780m). The project presented many challenges, including difficult ground conditions and the need to avoid a short-circuit of two aquifers, not to mention the need to avoid damage to the Herrenbrücke due to settlements.

The Herrenknecht Mixshield S-200 was required to prove its stability after just a few meters had been drilled when erratic boulders had to be removed from the tunnel face. Apart from that, the Mixshield coped so well on its two runs with the varying geological conditions, that the last meter of the tunnel was bored after one year, without any short-circuits occurring. After the tunnel opened in 2005, the Herrenbrücke, which was previously the largest bascule bridge in Europe, was no longer required and was demolished.

Data Sheet

Country, Location

Germany, Lübeck

Year

2002 – 2003

Application

Road

Geology

Heterogeneous ground
Sand, silt, moraine

Tunnelling length

1,520 m

Machine Data

1x Mixshield:
Diameter: 11,670 mm
Lining method: Segmental lining
Cutterhead power: 1,540 kW
Torque: 8,900 kNm

Your contact person Contact us

Jack Brockway President and CEO Herrenknecht Tunnelling Systems USA Inc.
Gerhard Goisser COO Herrenknecht Tunnelling Systems USA, Inc.