On 28.07.2017 the top heading breakthrough of the 2.1-km-long Stein Tunnel was celebrated after 12 months of construction. The Stein railway tunnel forms part of the St. Kanzian string of tunnels on the Carinthian side of the new Koralm railway line, which connects the cities of Graz and Klagenfurt (Austria). The breakthrough of the bench is scheduled to take place by the end of August.
The 0.5-km-long Lind Tunnel of the St. Kanzian string of tunnels had already been completed on 21.02.2017 after 8 months of excavation. The waterproof permanent linings, consisting of reinforced concrete, will be installed in the near future. Track construction will not go underway before the structural works for the St. Kanzian string of tunnels will be completed at the end of 2019. The section between Althofen on the Drava River and St. Kanzian is due to go into operation by 2022.
After completing the conceptual design, permit application design, and tender design services, ILF Consulting Engineers have been awarded a contract by the Austrian Federal Railway ÖBB in mid 2015, entrusting them with the construction design and on-site geotechnical monitoring services.
A video of the breakthrough can be found here: https://kaernten.tv/shows/122
Image source: Land Kärnten, Fotographer: LPD/Just