Rohbaustollen Angath

6321 Angath, Tyrol, Austria

From 2023, ÖBB is planning to realise an important project: the construction of a shell tunnel as an integral part of the future Angerberg tunnel. This tunnel extends over a length of 2.6 km along the axis of the Angerberg and has its starting point west of the centre of the municipality of Angath. The project involves crossing under the A12 Inntal motorway, followed by a mining excavation on the northern side of the motorway.

The tunnelling has a dual significance. On the one hand, it provides valuable insights into the geology of the region, which is of crucial importance for the subsequent development of the railway tunnel. Secondly, it is a crucial component of the construction logistics that will support the driving of the railway tunnel. Over the coming years, this shell tunnel will be developed into a rescue tunnel, which will increase safety throughout the project.

The planned construction work includes the construction of a pre-cut to create a suitable construction site area. This will be followed by the actual tunnelling of the Angath shell tunnel. This comprises not only the main tunnel, but also several secondary tunnels, including three orthogonal blind tunnels with lengths of between 7 and 27 metres and six transverse tunnels with lengths of 6 to 22 metres. The tunnel on the north side has a length of 110 metres.

he completed Angath tunnel shell is an essential milestone for the subsequent construction phases. In particular, it will form the basis on which the upcoming construction project will be built. A notable feature of this project is the use of Building Information Modelling (BIM). BIM will be used in various phases, including tender planning, execution planning, invoicing and maintenance planning.

Another feature of this project is the use of an alliance contract.

Text and visualisations ©ÖBB-Infrastruktur AG