Switzerland

Küblis Bypass:
Tunnel Roughwork completed

The 3350 m long Küblis Bypass between Dalvazza and Prada in the Canton of Graubünden is intended to relieve the municipality of through traffic on the A28 national highway. The 2255 m long tunnel is the scheme’s main structure comprising 73 % of the entire Bypass route. It will accommodate two driving lanes with two-way traffic with a safety tunnel located at a distance of 30 m, which is linked to the main tunnel by means of cross-passages every 250 m. After two and a half years of excavation, the break-through took place in March 2013. This was followed up by initially developing the tunnel...

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Issue 07/2012 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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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 05/2016 Switzerland

Küblis Tunnel opened after Eight Years of Construction

At the end of June 2016, the 3350 m long Küblis bypass between Dalvazza and Prada was opened to traffic in the Canton of Graubünden in Switzerland. As a result the municipality Küblis has been...

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Issue 01/2011 Switzerland

The Lungern Bypass Tunnel – Breakthrough and initial fitting out

For the Lungern bypass tunnel, a 3.5?km long exploratory tunnel was first driven from north to south in 2000 – 2003 using a tunnel-boring machine (TBM, 4.75?m diameter). The tunnel route was then...

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Issue 08/2011 Switzerland

Gotthard Base Tunnel: Industrial Safety

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