Switzerland

Küblis Bypass:
Tunnel Roughwork completed

Quelle/credit: Tiefbauamt Graubünden

Concrete lining of the Küblis tunnel with the alternating sequential method in 10 m sections

Quelle/credit: Tiefbauamt Graubünden

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...

Issue 2012-07 Switzerland

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...

Issue 2011-03 Switzerland

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...

Issue 2016-05 Switzerland

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...

Issue 2011-01 Switzerland

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...

Issue 2011-08 Switzerland

The 57 km long Gotthard Base Tunnel with its 2 single-track bores and 2 Multi-Function Stations 1/3rd and 2/3rds of the way along the tunnel with emergency stops and crossovers given up to 2,500 m...

tunnel 05/2014

tunnel 05/2014

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