Major Rehabilitation Works at the Hauenstein Base Tunnel
n September 2023, the SBB started the fundamental overhaul of the Hauenstein Base Tunnel. The tunnel vault and technical installations of the railway tunnel will be renovated. This work will last until autumn 2026, with interruptions in the summer and at the end of the year.
In addition, four tunnel-wide single-track closures are planned. They will take place in 2024, 2026, 2027 and 2028, each during five weeks in the summer holiday period, when there is less traffic. During these closures, the SBB will renew the tunnel tracks.
The 8.1-kilometre-long, two-lane Hauenstein Base Tunnel was built between 1912 and 1916. The tunnel lies on the Basel–Olten railway line and crosses the Jura mountain range between Tecknau and Olten. In 2019, an average of around 100 goods trains and 320 passenger trains used the tunnel every day. The last comprehensive renovation work on...
