From 2021 to 2025, the A8 between Interlaken-Ost and Brienz is being completely renewed, including the tunnels Sengg, Chüebalm and Giessbach. To execute the work, the A8 is closed during the week as follows, depending on the season:
- October to Mai: in the nights Mon/Tue to Fri/Sat from 8 p.m to 6 a.m.
- June and September: in the nights Mon/Tue to Thu/Fri from 8 p.m. to 6 a.m., in the night Fri/Sat from 9 p.m. to 6 a.m.
- July and August: in the nights Mon/Tue to Fri/Sat from 9 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.
The cantonal road in Brienz is open again at night. Therefore, the night closures of the A8 will take place again.