On 21.07.2017, after a 3 years and 10 months of construction, the second tube of the Gleinalm tunnel in Styria, Austria has been opened to traffic. The joint venture of Wayss & Freytag Ingenieurbau and Area South, built the 8.3km long tunnel tube in a joint venture for their client ASFINAG. The road tunnel, which was driven conventionally, is part of the A9 Pyhrn motorway. This tunnel tube makes driving on the A9 motorway significantly safer, since the construction of the second tube allows a separate flow of traffic in both directions in the Gleinalm Tunnel. There were 34 cross passages created to provide the required escape routes. As well as this eight lay-bys and emergency call recesses were built. 

The ‘ears’ are a special feature of this road tunnel. The acoustic tunnel monitoring system ‘AKUT’ filters out atypical sounds such as squealing tyres, the honking of car horns or screaming and sends them to the security control centre which allows for faster intervention in an emergency. Starting from September 2017 the general renovation of the existing almost 40 year old tunnel tube will begin. By the end of 2019, the last bottleneck of the A 9 Pyhrn motorway will be eliminated in Styria. For further information please click at/17 for tunnelbuilder archive. Visit https://www.asfinag.at   and https://www.wf-ib.de. 34/17.