Different tunnels in the Bernese Oberland will be closed for the periodical cleaning:
Leissigen tunnel
4 nights 7/8 until 10/11 April 2025, from 8 p.m. until 6 a.m.: closure of the Leissigen tunnel in both directions.
Simmenfluh tunnel
14 April 2025, from 7 a.m. until 4 p.m.: closure of the Simmenfluh tunnel in both directions.
Leimern tunnel
1 night 16/17 April 2025, from 8 p.m. until 6 a.m.: closure of the Leimern tunnel in both directions.
Mitholz tunnel
1 night 28/29 April 2025, from 7 p.m. until 6 a.m.: closure of the Mitholz tunnel in both directions.
Traffic will be diverted over the cantonal roads.
Renovation of the A8 Interlaken-Ost – Brienz
Construction on the A8 between Interlaken-Ost and Brienz was supposed to be finished by the end of 2024. However, the work has suffered delays due to the natural disaster in Brienz on the 12 of August. Night closures and zones with reduction to one lane are therefore still be necessary in 2025. The first night closure took place in the night of the 3/4 of March. The A8 is closed in the nights of Mon/Tue to Fri/Sat, from 8 p.m. to 6 a.m. from March until the end of May, except during public holidays like Easter or Pentecost. The zone with traffic on one lane just east of the Chüebalm tunnel was installed during the first night closure and will also stay in place until the end of May.
Regular night closures
The A8 is closed during the week as follows:
- March to Mai: in the nights Mon/Tue to Fri/Sat from 8 p.m to 6 a.m.
Traffic between Interlaken and Brienz will be diverted onto the cantonal road on the right-hand side of the lake. The communal road will be available for traffic between Interlaken and Iseltwald.