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JD Neuhaus

Hard Rock TBM »Ulrikke« takes Tunnelling in Norway to the next Level

Whether it's a world record with the longest railway tunnel on earth at the Brenner or the epoch-making Gotthard project: the business of mechanized tunnel boring through hard rock is currently reaching new heights in Europe. Now Scandinavia is discovering the advantages of mechanized tunnelling. With the breakthrough at the Ulriken Tunnel, the first major tunnel project in Norway using a Herrenknecht Gripper TBM has been successfully completed.

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Breaking through to speed Millions of Rail Journeys in Norway

After 21 months of tunneling through Norwegian rock, success was just 1.5 meters away, through a final rock face. On August 29, our Ulriken Tunnel team crossed that final distance and became stars, if just for a day. Join them as they complete this major effort to eliminate a bottleneck on a busy rail line to the country’s capital.

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Strabag Subsidiary Züblin to build new Kriegsstraße Car Tunnel in Karlsruhe in Germany

Karlsruher Schieneninfrastruktur-Gesellschaft mbH (KASIG) is putting its trust in the civil engineering competence of Ed. Züblin AG. The Strabag Group subsidiary is leading a consortium with Schleith GmbH to build the Kriegsstraße car tunnel in Karlsruhe. The two-lane tunnel in Kriegsstraße is the second part of the Kombilösung public transport infrastructure project to build an efficiently functioning rail network for the local public transport and to reduce the volume of traffic in central Karlsruhe. The contract for the road tunnel has a value in the low triple-digit millions.

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Consortium around Strabag to build Section of D3 Motorway in Slovakia

  • 5.6 km section of D3 motorway between Čadca and Bukov
  • Share in consortium: 44 %
  • Contract value: € 239 million

A construction consortium around Strabag (44 %) has been chosen to build a 5.6 km section of the D3 motorway in northern Slovakia. The € 239 million contract is being performed on behalf of the state motorway company NDS a.s. and is scheduled to be completed after 48 months of construction. The project comprises the construction of the roadway, 19 bridges, several retaining walls and more than 11 km of noise barriers. This section of motorway forms part of the Pan-European Transport Corridor and will improve the transport connection to the country’s northern neighbour of Poland.

“The challenges facing this project can be found in the geological conditions of the land. We are dealing with partly marshy terrain here, with the risk of landslides in many places,” explains Thomas Birtel, CEO of Strabag SE. For this reason, drainage measures are being taken and retaining walls erected ahead of construction. The section traverses several deep valleys, which will be connected by appropriate bridge structures. The geological conditions will require the carriageways in one area to be constructed at different elevations with a maximum horizontal separation of 4 m.

Source: Strabag SE

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