Consortium wins $850m Austrian tunnel contract
Implenia and Swietelsky secure $850m Semmering base tunnel deal
A consortium consisting of Implenia and Swietelsky has been awarded an $850m Austrian rail contract.
Implenia will take the technical lead on the planned Semmering base tunnel (SBT) - one of the most important large-scale infrastructure projects in Central Europe - which forms part of Austria's new southern railway, providing a central axis for trans-European routes from the Baltic coast to the Adriatic.
The Austrian Federal Railways (ÖBB) awarded the consortium the 13km long middle section, which will be built using both TBM drilling (8.6km) and mining methods (4.3km). It involves 26 cross passages, an emergency stop station and two 400m ventilation shafts to supply the entire construction site.
One of the main challenges in this major project is dealing with the geological conditions in the drilling zone. Added to this is the need to supply the construction sites with building materials and take away excavated matter - always with a view to finding sustainable solutions for people and the environment.
Implenia's many years of experience, and particularly the expertise gained from the successful construction of the NEAT base tunnel, will be very useful in this new project. Implenia took the technical lead on three of the five lots within the NEAT project - Sedrun, Bodio and Faido. The Bodio and Faido sections were handed over on schedule to the client in September 2013 after approximately 12 years of construction.