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More information on service tunnels

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The future of underground construction

HS-EPS tunnel elements

High-strength expanded polystyrene

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Unique prototype


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Tunnelling and its importance


References

A selection of our best projects

E39 Rogfast, E02 Kvitsøy contract
E39 Rogfast, E02 Kvitsøy contract

E39 Rogfast, E02 Kvitsøy contract

The Joint Venture (JV) of Implenia and Stangeland Maskin (Implenia 77%, Stangeland Maskin 23%) has been awarded with a second contract for the Rogfast project by the Norwegian Public Roads Administration. The total contract value of the new project E02 Kvitsøy amounts to more than CHF 540 million, resulting in an order volume for Implenia of over CHF 420 million.

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District heating tunnel – West (FWS-West) Southern Line
District heating tunnel – West (FWS-West) Southern Line

District heating tunnel – West (FWS-West) Southern Line

Wärme Hamburg is a 100% municipal heat supplier and, with the "FWS-West project", intends to install a district heating line from the new CHP plant to be built at the Dradenau site through the Waltershof port area, in a new tunnel structure under the Elbe through to the existing District Heating West Line in Hamburg-Bahrenfeld in the Notkestrasse and to connect it there.

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Brenner Basistunnel Los H41
Brenner Basistunnel Los H41

Brenner Basistunnel Los H41

The Brenner Base Tunnel is a flat railroad tunnel connecting Italy and Austria. It runs between Innsbruck and Franzensfeste over a length of 55 km.

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Semmering Base Tunnel SBT Lot 2.1

The planned Semmering Base Tunnel (SBT) is currently one of the most important large-scale infrastructure projects in the heart of Europe and part of the new Austrian Southern Railway, which is the central axis on the trans-European route from the Baltic Sea to the Adriatic Sea.

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Albvorlandtunnel

The new Wendlingen-Ulm line (NBS), together with Stuttgart 21, significantly improves Baden-Württemberg's infrastructure and thus creates shorter travel and transport times not only in Baden-Württemberg but also across Germany and Europe.

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Lyon Metro Line B

This project, with a length of approximately 2.5 km, will extend line B from Gare d'Oullins station to Hôpitaux Lyon Sud station and create two additional stations. The journey time between Oullins station and the Lyon Sud hospitals is 3 minutes and 20 seconds.

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Nant de Drance pumped storage power station

The project involves the construction of a pumped storage power plant between the two dams Emosson and Vieux Emosson. The new power plant cavern is located at approx. 1700 m a.s.l. Access to the underground facility is from below through a 5 km long tunnel and from above through a 2 km long tunnel system.

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Slussen SN91

Extensive rock and concrete work at Katarina Mountain. To accommodate Stockholm's continuous development, Slussen is rebuilt and a bus terminal is built at Katarinaberget.

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Sandbukta-Moss-Såstad (SMS2A)
Sandbukta-Moss-Såstad (SMS2A)

Sandbukta-Moss-Såstad (SMS2A)

The new double-track project Sandbukta-Moss-Såstad (SMS2A) is part of the Intercity development and one of the plots in the connection to Halden (west line of Østfoldbanen). On the line, 10.3 km of double-track will be rebuilt, partly in tunnel and partly in daytime.

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News

Here is a selection of our tunnelling news

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