Currently (5/2023) there are no recognizable construction activities at the tunnel. Access (reasonably) blocked, with 24/7 video surveillance. More information: hermann-hesse-bahn.de
The new tunnel will shorten the so-called Hacksberg loop, which is over three kilometers long, which will significantly reduce the travel time of the Hermann Hesse Railway.
Currently (4/2024) the tunnel itself is largely finished. The sleepers are ready for the superstructure. There are no barriers, you can get right up to the portal.