Technical specifications

Scope of work

  • Length: 2.2 km, excavated cross-section: 80 m² - 100 m²
  • 2 parking bays, area: 125 m²
  • 6 cross-passages to an existing exploration tunnel
  • Ventilation shaft, diameter: 4m, depth: 38 m
  • Service buildings and emergency exit shafts

Construction method

  • Drill and blast method in combination with tunnel excavator,
    length: 1.4 km;
  • Cut and cover method: 732 m

Geology

  • Ground moraine
  • Flysch sedimentary rock

General data

Project
B 1 Federal Road Wiener Straße
Henndorf Bypass, two-lane road tunnel

Client
Land Salzburg, Landesbaudirektion
[State of Salzburg, State Building Authority]

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

Construction period
2006 to 2009

Construction costs
€ 38 million

Utilisation
Infrastructure
Type
Road Tunnel, double-track
Length
2.2 km
Construction Method
Drill and blast method in combination with tunnel excavator

Related Projects
Gleinalm Tunnel 2nd tube
Gleinalm Tunnel 2nd tube
Austria

During extension of the Pyhrn motorway, the Gleinalm Tunnel is provided with a second tube. This makes the motorway safer, since there will be no oncoming traffic in the tunnel.

Read more
Light Railway Dortmund “Ostentor”
Light Railway Dortmund “Ostentor”
Germany

New U-railway line in the center of Dortmund will replace the existing overground running tram.

Read more
Joint power station at river Inn
Joint power station at river Inn
Austria

The new hydroelectric power plant supplies sustainably produced electricity for approx.100,000 households without emitting pollutants in Tyrol and Engadin. Power house and power descent were built by Wayss & Freytag Ingenieurbau.

Read more

Cookies Policy

Our website uses cookies to improve your experience. Certain cookies can contain personal information. We deactivate Cookies, unless you allow Cooky usage.
Additional information

Allow Cookies
Do not allow cookies
Cookies Settings