Tunnelling is our business - ALPINE Bau Gmbh

06 Underground Construction
Tunnels for Roads and
Motorways
Pfänder Tunnel, Second Tube, A14 / Bosruck Tunnel, Second Tube, A9
ABT is the main contractor for the construction of the second tubes of the Pfänder and Bosruck
tunnels. Both are 2-lane motorway tunnels. New Austrian Tunnelling Method (NATM) is used for
the second tube of Bosruck Tunnel and was also used for the construction of the first tube of
Pfänder Tunnel, which ABT built in the years 1977-1981.
Jagdberg Tunnel, A4
After the construction of Heidkopf Tunnel, a twin-tube 2-lane motorway tunnel, completed in
2006, another contract with DEGES followed in the form of the Jagdberg Tunnel. This 3-lane
motorway tunnel between Jena/Göschwitz and Magdala is beeing executed using the NATM
method.
Pfänder Tunnel, Second Tube is the first road
tunnel to be built by TBM in Austria.
FEATURES
Pfänder Tunnel, Second Tube // The challenge is the ground – a “molasse” consisting
of conglomerate, sandstone, marl-sandstone, marl and clay-marl, and soil. Execution is
being carried out by Single Shield TBM, lining with pre-cast concrete segments, crosspassages
and soil by NATM.
Bosruck Tunnel, Second Tube // The construction includes 14 crosspassages and
seven lay-by enlargements. Excavation is being effected by drill & blast and excavator
(NATM).
Jagdberg Tunnel // Excavation of a 140 m deep ventilation-shaft by raiseboring
(Ø 1.5 m) and shaft sinking (Ø 8 m).
Pfänder Tunnel, Second Tube
Location: Bregenz-Lochau / AT
Total length: 6,744 m
Value: € 123.197 million
Construction Period: 2007-2012
Bosruck Tunnel, Second Tube
Location: Spittal/Pyhrn-Ardning / AT
Total length: 5,424 m
Value: € 129.628 million
Construction Period: 2009-2013
Jagdberg Tunnel
Location: Jena/Göschwitz-Magdala / DE
Total length: 6,144 m
Value: € 127.072 million
Construction Period: 2008-2012