Austria

Second Bore of the Roppener Tunnel operational

A second bore was produced for the 5.1 km long, single-tube Roppener Tunnel near Imst for the motorway in the Tyrolean Upper Inn Valley. It was created largely by mining means (drill+blast with full excavation) together with 23 cross-passages. It was opened on September 23rd, 2009. Subse-quently the original bore has to be redeveloped and adjusted to the latest safety requirements. The completely redeveloped tunnel is scheduled to be opened in April 2011, when one-way traffic will flow through the 2-lane tunnel tubes. As a result safety standards will be further enhanced on the Austrian road...

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Issue 2010-03 Austria

Breakthrough at Pfänder Tunnel

A second bore for the 6.6 km long Pfänder Tunnel was driven with a tunnelling machine (S-494, Herrenknecht AG) with 11.85 m cutterhead diameter. The support was provided with 25 cm thick and 2 m...

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Issue 2010-03 Switzerland

Gotthard Road Tunnel to be redeveloped

The 17 km long Gotthard Road Tunnel possesses a 2-lane bore operating bidirectionally with a parallel negotiable evacuation tunnel. It was opened in 1980. During the next few years the surfacing and...

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Issue 2011-07 Austria

The twin-bore Tauern Tunnel commissioned

The 6.4 km long Tauern Tunnel (1971/1975) on the A10 motorway was provided with a second bore (2006/2010) following the accident in 1999 while the existing bore was redeveloped at the same time. In...

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Issue 2010-07 Austria

Second Bore for the Tauern Tunnel

The second bore for the Tauern Tunnel on the A10 motorway is 6,400 m long and was driven by mining means within 22 months. It was opened on April 30, 2010 following less than 4 years’ construction,...

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Issue 2011-08 Austria

Bosruck Tunnel: Breakthrough for 2nd Bore

The breakthrough of the second bore for the 5.5 km long Bosruck Tunnel designed for 2 lanes took place on August 11, 2011 after only 17 months of construction. It occurred 2.5 months earlier than...

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