Germany

Scheibengipfel Tunnel: Completion by the End of 2016

The 1910 m long Scheibengipfel Tunnel is the key structure on the 3.1 km long Reutlingen bypass on the German federal main road B 312. The two-lane tunnel runs through the ridge of the Scheibengipfel, which stands in front of the Achalm mountain, the local landmark of Reutlingen.

Contractor Max Bögl GmbH & Co. KG started construction on the 83 million euro project in the middle of 2012. Excavation of the tunnel with a cross-section of 98 m² and the 1940 m long escape and rescue tunnel with a cross-section of 20 m² were completed by the middle of 2014, followed by the two-pass lining of the road...

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Issue 05/2022

Kerenzerberg Road Tunnel Safety Gallery

1 Introduction The Kerenzerberg Road Tunnel is part of the A3 national road and is located within the region of the Canton of Glarus, between the Weesen and Murg junctions. In 1986 the tunnel...

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Issue 02/2014 Germany

Scheibengipfel Tunnel – Breakthrough at the South Portal

The breakthrough of the Scheibengipfel Tunnel for the Reutlingen bypass has been accomplished. On January 27, 2014 a Max Bögl excavator broke through the last partition wall at the south portal with...

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Issue 03/2019

Rotterdamsebaan: Tunnel Driving and Cross Passages

Introduction The € 272 million Rotterdamsebaan is currently under construction between the Ypenburg intersection and the Centrumring in the Dutch city The Hague. It is being built under a Design &...

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Issue 03/2011 Switzerland

Küblis Bypass: Tunnelling starts

Extensive preliminary work on the 3,350?m long Küblis bypass tunnel in the Canton of Grisons, including the Dalvazza pilot cut (2009/2010) for the portal zone, preparations for actual tunnelling and...

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Issue 04/2009 Construction Equipment

Designed for a small Cross-Section

The workplace for the Caterpillar 321C KCR tunnel excavator is extremely small for the machine operator has to make do with a cross-section of only 20 m² for loosening material when driving the...

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