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A8 Rugen / Lütschinen

A8 Rugen tunnel and Lütschinen underpass

In the period from 2014 to 2017, the Rugen tunnel and Lütschinen underpass were renovated and their safety installations were optimised.

During the renovation, one tube of the Rugen tunnel was closed while the other tube accomodated traffic in both directions.

Between 2014 and 2017, the Rugen tunnel was comprehensively renovated. The operating and safety systems were replaced, together with the drainage system, and additional escape routes were installed.

By 2020, 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 were taken to enhance fire prevention, and the operating and safety systems were upgraded. In addition, a fire escape was constructed as an emergency escape route. Most of the construction work was carried out at night.


  • 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
In the Lütschine underpass, construction took place mainly at night. During daytime, both lanes were generally open to trafic (photo taken during construction work in 2015).