A8 Rugen tunnel and Lütschinen underpass
In the period from 2014 to 2017, the Rugen tunnel and Lütschinen underpass have been renovated and their safety installations have been optimised.
During construction, one tube of the Rugen tunnel was closed while the other tube accomodated traffic in both directions.
Between 2014 and 2017, the Rugen tunnel has been completely renovated. The operating and safety systems have been replaced, together with the drainage system. Additional fire escapes have been installed.
At a later date, anti-recirculation walls will be constructed between the tunnel portals in order to ensure that, in the event of a fire in one of the tubes, smoke is prevented from entering the other tube.
In the Lütschinen underpass, in addition to the standard renovation of the concrete structure, measures have been taken to enhance fire prevention, and the operating and safety systems have been upgraded. A fire escape has also be constructed as an additional safety measure.
- Date of handover of Rugen tunnel to traffic: 3 December 1979
- Date of opening of Lütschinen underpass: 18 May 1988
- Length: Rugen tunnel, 800 metres; Lütschinen underpass, 560 metres covered, 180 metres as gallery
- Duration of renovation work: Spring 2014 until fall 2017
- Costs for renovation / safety installations in Rugen tunnel: Approx. 50 million Swiss francs
- Costs for renovation / safety installations in Lütschinen underpass: Approx. 30 million Swiss francs