Top Projects

Below we provide an insight into selected national and international projects. These not only show our range of services, but also provide an impression of the extent to which we contribute our various specialist areas to project tasks.

Tallinn Tunnel

Railway tunnel connection between Helsinki/Finland and Tallinn/Estonia, underpassing the Gulf of Finland

Salang Corridor Project

Corridor study and feasibility study for a road con-nection in the Hindukush Mountains, including a tunnel at high altitude at the Salang pass

Groundwatermodel Bregenzerwald

Groundwater modelling Bregenzerwald, Schwarzenberg Stiegeln - Schnepfau

Tunnel Bühel

Construction of a two-lane road including open-cut excavation at Bühel tunnel, portals, watercourse protection facilities, operating ...


Seekirchnertunnel: double tube – single track railway tunnel with a length of 14.37 km, about 13.33 km driven by TBM and NATM.


TGL - Tauern Gas Pipeline

The Tauern Gas Pipeline (TGL) project enables the continuous transport of natural gas from Upper Austria with its numerous natural gas storage ...

AVL - L191 Citytunnel Feldkirch - AUSTRIA

In the course of traffic planning and management, the provincial government of Vorarlberg plans a subsurface by-pass in Feldkirch (Austria). It ...

Koralm Tunnel - CL KAT 2

The Koralm Tunnel, located between the two Austrian federal capitals of Graz and Klagenfurt, is the core of the Pontebbana axis.

Pump - Storage Hydropower Plant Koralm

The pump - storage hydropower project takes advantage of the morphologically and geologically favorable conditions of the Koralpe for the ...

Semmering Basetunnel CL 2.1

Construction Lot 2.1 – Tunnel Fröschnitzgraben of Semmering Base Tunnel is the middle and with approx. 13 km length the longest ...

Semmering Basetunnel CL 3.1

Semmering Base Tunnel, Construction Lot SBT3.1 – Tunnel Grautschenhof,

2 single track tunnels, auxiliary structures such as cross ...

Karawankentunnel - Restoration

Investigation and evaluation of the condition from a rehabilitation needed railway tunnel

Obervermunt Power Plant

Obervermuntwerk II will be the second largest power plant of the „Vorarlberger Illwerke AG“. OVW II covers the construction of a ...

Rebuild of Train Station Rankweil

The reconstruction of Rankweil train station is taking place under maintaining the entire public transport system.

Flood protection Fischbach

Geotechnical and tunnel engineering support as well as construction management consulting

Mobility Concept Bad Gastein

The central task of the mobility concept for Bad Gastein is to connect the town center with the railway station square.

Milleniumpark Hotel Lustenau

On a realty in the „Millenium Park“ in Lustenau the construction of an 11-storey hotel with a basement (20,5 m x 20,5 m) and a ...

Müselbacher Strasse

Geotechnical assessment, Underground investigation

A14 - Demolition Object V34

Demolition V34, A14 Rheintal/Walgau motorway, INS Wolfurt Dornbirn and WRS KM 11,89 to 14,6

A14 - Rebuilding Interchange Bludenz / Bürs

Project A14 Rheintal- / Walgau Autobahn, Rebuilding ASt Bludenz – Bürs

Geotechnical construction supervision

1 2

3G GRUPPE GEOTECHNIK GRAZ ZT GMBH | Triester Straße 478a | 8055 Graz – Seiersberg-Pirka | Austria | T: +43/316/337799 | office[a] |

Branch office Vorarlberg | Hintere Achmühlerstraße 1a | 6850 Dornbirn | Austria | T: +43/5572/200649 | vorarlberg[a] |

Imprint | Privacy