Switzerland

Redeveloping the Gubris Tunnel

The 3.3 km long Gubris Tunnel is located in the Zurich North Bypass (A1/A4 North Ring) between the municipalities of Weiningen and Regensdorf. The road tunnel, which opened in 1985, has 2 directionally separate bores each with 2 lanes. Both bores are linked to one another by means of 12 cross-passages set 300 m apart.

The ventilation system, power supply, lighting, the signalling, communications and monitoring systems are being renewed in the tunnel at a cost of 75 m. CHF (60 m. euros). The concept foresees traffic being affected as little as possible. Up to 114,000 vehicles per day pass...

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Austria

Pfänder Tunnel: 2nd Bore opened for Traffic

The 6,585 m long, two-lane Pfänder Tunnel on the A14 in Vorarlberg/Austria with an average daily frequency exceeding 30,000 vehicles is being provided with a second bore, which is also 2-lane, to...

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Switzerland

Roveredo Bypass: Tunnel Breakthrough

A 2-lane bi-directional tunnel is being built for the Roveredo Bypass – with shoulders at both sides and 2 lay-bys. It has up to 3,000 m overburden and runs north with 0.8 % gradient lying in an arc...

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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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Switzerland

Küblis Bypass: More than 60 % of Tunnel excavated

The Küblis Bypass scheme belongs to the Dalvazza-Selfranga project. Firstly the Klosters Bypass was opened in 2005 and then the Saas Bypass in 2011; now the 3,350 m long Küblis Bypass between...

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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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