Austria's Koralm tunnel: one of the world's largest tunnel projects

The Koralm railway line is currently one of the most prestigious construction projects of ÖBB-Infrastruktur Bau AG. In 2018 the new 130 km long two-track electrified route is supposed to raise the capacities and reduce travel times along this important northsouth railway axis. The 33 km long, ambitious Koralm tunnel forms the core piece of this line. Forcing the track development in Austria, ÖBB-Infrastruktur Bau AG focuses on the development of the main connections to high performance routes such as the Koralm railway line, the four-track development of the Danube line and of the Lower Inn Valley route. Furthermore, ÖBB invests in the modernisation of its largest stations, many suburban service projects, enhanced tunnel safety, noise protection measures as well as park & ride facilities and extensive reinvestments in the existing rail network.