S10 Mühlviertler express road, Austria
Tunnel Götschka

This project was realized in cooperation of IGT and the engineering office laabmayr.

The S10 Mühlviertler express road project includes a 22km-lon new build section in Upper Austria between the end of the A7 motorway and Freistadt. The new section includes four tunnels, four cuttings and numerous further structures.

The most complex structure is the twin-tube Tunnel Götschka. The tunnel was driven through granites, which presented as fine to moderate or coarse (Weinsberger Granite) throughout the drive.

The maximum cover is 100 m. Around 725 m in, the tunnel passed underneath existing surface structures. Both tunnels are equipped with forced ventilation and smoke extraction systems, requiring a suspended ceiling slab over the whole length of the tunnel. Ventilation plant buildings are located at both portals. The tunnel was opened to traffic in December 2015.

Services provided by IGT & Laabmayr: Initial and consents design including design for the Environmental Impact Assessment, tender design, tender document preparation, detail design and provision of the on-site geotechnical engineer.