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 scheduled in spite of tricky geology (in the Haselgebirge with anhydrite springs etc.). This was followed by the remaining bench and floor excavation, production of the invert with drainage and creating bays and installing the concrete inner shell followed by the units for the extinguishing water supply, lighting and ventilation etc. The new tunnel bore was produced via drill+blast in accordance with...

Related articles:

Issue 2013-06 Austria

Bosruck Tunnel: Redeveloping the existing Bore

A second bore was produced by drill+blast using the New Austrian Tunnelling Method (NATM) for the 5.5 km long, 2-lane Bosruck Tunnel on the A?9 motorway. It possesses 2 lanes. After being broken...

more
Issue 2010-04 Austria

Second Bore for Bosruck Tunnel

The Asfinag as operator of the motorway in Austria has commissioned the construction of a second tunnel bore with 5 breakdown bays and 11 cross-passages (6 of them negotiable with vehicles) for the...

more
Issue 2013-03 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 2015-08 Austria

Twin-bore Upgrading of the Bosruck Tunnel completed

The 5425 m long Bosruck Tunnel between the states of Upper Austria and Styria has been in operation since 1983, and traffic has been running through a new second bore since summer 2013. After thorough...

more
Issue 2013-06 Austria

Arlberg Tunnel: 37 new Escapeways

At the end of 2010 the ÖBB recommissioned the 10 km long rail tunnel with 2 tracks after completing 8 evacuation and rescue ways leading to the parallel running Arlberg road tunnel The costs involved...

more