Together with partners, ILF Consulting Engineers has been involved in the site supervision of the Koralm tunnel KAT2 contract section on behalf of the Austrian Federal Railways (ÖBB) since 2010. After the start of the construction works in 2011 and the start of the TBM drive in 2013 the completion of the excavation works was celebrated on 18 Feb 2018. This means that over a period of 59 months of tunnelling some 17,145 m of tunnel were excavated for this contract section.
Forming part of the Baltic-Adriatic Axis, the Koralm tunnel shall, after its completion, contribute to significantly reducing travel times in passenger traffic and to improving the conditions for environmentally friendly railway freight traffic. The 32.9 km long single track railway tunnel was divided into three contract sections, with the 19 km KAT2 section being the longest one.
ILF is both in charge of the site supervision and of the technical management of the joint venture for the site supervision.