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 wide reinforced concrete segmental rings (5 – 1) and the TBM arrived at the tunnel’s south portal
on November 13, 2009 after
14 months. Following the breakthrough 30 cross-passages are now being produced by drill+blast between the 2 tunnel bores as well as the connection with the ventilation shafts. Subsequently the new tunnel tube will be lined (inner shell, concrete carriageway, signal units etc.).

T...

Find out more in

tunnel 03/2010

Find out more in

tunnel 03/2010

Tunneling Technology: Advanced Exploration accompanying the Drive

Belgium: Schuman-Josaphat Rail Link in Brussels

Germany: Planning and Building the Chancellor Line in Berlin

Ressort:  Nachrichten | News
subscription Content

Related articles:

Issue 02/2013 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...

more
Issue 08/2011 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...

more
Austria/Slovenia

Karawanken Tunnel Breakthrough

Completion of the 2nd Bore Planned for Autumn 2025 This means that the inner lining of the new tunnel can begin in May 2024, followed by the installation of electrical equipment and safety systems....

more
Issue 03/2013 Austria

Redeveloping the Pfänder Tunnel

After commissioning the 2nd bore in mid-2012, the original 6,585 m long, twin-track bore of the Pfänder Tunnel was closed to traffic to be redeveloped. In late 2012, most of the construction jobs in...

more
Issue 02/2024 Austria/Slovenia | Österreich/Slowenien

Karawanken Tunnel Breakthrough

On 18 March 2024, the official tunnel breakthrough of the 2nd tube of the Karawanken Tunnel between Austria and Slovenia took place. This marks the completion of the tunnelling work on the 7.9 km long...

more