Jungfrau area timetable changes
 

The railway lines Interlaken - Brienz and Interlaken - Grindelwald are actually closed.
Brienz and Meiringen can be reached by buses running in the same timetable as the trains.
Grindelwald can be reached from Interlaken via Lauterbrunnen - Wengen - Maennliichen or from Meiiungen via Grosse Scheidegg.