W&F Hengsberg Tunnel

Hengsberg Tunnel

Austria

Hengsberg Tunnel

Austria

Hengsberg Tunnel

Austria

Hengsberg Tunnel

Austria

Technical specifications

Project description

Double-track railway tunnel KL=1,695 m
closed construction method, L=1035 m, A =110-125 m²
Cut and cover method L=400m
top-down method L=210 m
3 emergency exits
Open land section, L=5,898 m
Earthworks, drainage works, noise protection, accompanying paths, retention areas

Objects

1 underpass structure
1 stormwater bridge

Construction method

Closed construction method:
combination of tunnel excavator and drill and blast
Cut and cover and top-down method
with separate bored pile sheeting

Geology

Quaternary: Sand, gravel
Neogene: sandstone, silt / clay/ marl- rock, silt

General data

Project
Koralmbahn (railway) Graz–Klagenfurt B 1581
Lot 3 – Hengsberg Tunnel,

Client
ÖBB Infrastruktur Bau AG

Contractor
Wayss & Freytag Ingenieurbau AG
as technical leader of a joint venture

Construction period
2007 to 2010

Construction costs
€ 76.8 million

Related Projects

Utilisation

Infrastructure

Type

Railway tunnel, double-track

Length

2.730 m

Construction Method

Drill and blast method in combination with tunnel excavator

Related Projects

Roppen Tunnel JV

Austria

The Roppen tunnel between Innsbruck and Landeck in Austria was made safer by the construction of the second tube. The 5,069 meter long tunnel was driven conventionally.