Tunnels, Caverns and Shafts: Case Studies
Case Studies & Reports
The Liberty University Tunnel: USA’s first Jacked Box tunnel
Liberty University is the largest university in Virginia and the largest private non-profit university in the USA. Until recently, the university c ... more
Construction of Prenner Pedestrian Tunnel in Ischgl, Austria
The Prenner Pedestrian Tunnel is located in the centre of Ischgl, Austria and ensures a direct connection of the parking garage in Ischgl's centre ... more
Steel ribs ensure safe advancement of Drumanard Tunnel, USA
North-east of Louisville, Kentucky, USA, the Ohio River Bridges - East End Crossing Project is underway. This project will close the last remaining ... more
The Arlberg Tunnel – Austria’s longest road tunnel
The single tube Arlberg Tunnel is the only east-west connection between Tyrol and Vorarlberg that can be used year-round. With 13,972 m, it is Aust ... more
Construction of Hirschhagen Tunnel, Germany’s second longest motorway tunnel
The construction of the A 44 motorway between Kassel and Herleshausen is an important part of the trans-European motorway network. After its comple ... more
The Petropolis Tunnel ensures fast connections with Rio de Janeiro
Petropolis, which is located about 70 km from Rio de Janeiro, once was the summer residence of the emperor Dom Pedro II. That is why it is also kno ... more
Major construction site at a depth of 40 m: Msheireb Metro Station, Qatar
The Msheireb subway station is situated in the heart of Doha and is the lynchpin of the ultra-modern metro system currently under construction in t ... more
Stabilization of the Vijenac Tunnel in Bosnia
A new motorway is under construction that is designed to improve the infrastructure between Bosnia and Herzegovina as well as Croatia. The project ... more
Brenner Base Tunnel will be the world’s second longest railway tunnel
The Brenner Base Tunnel (BBT) is a joint project built by Italy and Austria along the Munich-Verona axis. The planned 55 km long tunnel will be the ... more
Ceneri Base Tunnel – Switzerland’s third longest railway tunnel
The Ceneri Base Tunnel (CBT) in the canton of Ticino is the third longest railway tunnel in Switzerland. It is the continuation of the Gotthard Bas ... more