Arlberg road tunnel
Underground Mining Traffic tunnel construction
At 13,972 metres in length, the Arlberg road tunnel is the longest road tunnel in Austria and runs under the mountains at a depth of up to 1000 m. The Arlberg highway (S 16) runs through the single-tube tunnel between Vorarlberg and Tyrol which is operated by ASFINAG.
The road tunnel was opened to traffic in 1978; in order to improve its safety, eight tunnels connecting it to the parallel Arlberg railway tunnel were built in a first upgrading stage which was completed in 2008.
ARGE PKE-Jäger-BeMo-Hinteregger was awarded the contract for this refurbishment work, which was entirely concerned with improving the tunnel’s safety. Responsibility for the technical management fell to JÄGER BAU. 58% of the refurbishment was accounted for by construction work.
In addition to the renewal of the electrical and mechanical equipment and the re-equipment in the escape routes, the construction work included the following measures:
- 8 new breakdown bays,
- 37 escape routes (entranceways or stairwells from the driving tunnel tube to the supply air channel or the escape routes),
- construction of new fire extinguisher alcoves,
- installation of a new carriageway drainage system,
- roughening of the carriageway
- renovation of aquiferous block joints and cracks,
- concrete repair in the area of the galleries,
- renovation work in the operation buildings,
- construction of water protection systems at the portals.
Construction began in autumn 2014, and the refurbishment was completed in the autumn of 2017.