The 4-m corridor of the SBB will enable all goods containers with a corner height of up to 4 m and a width of up to 2.6 m to be transported along the Gotthard axis from 2020.
The new two-track tunnel at the Bözberg with a length of about 2.7 km will replace the existing tunnel tube, which will then be used as service and escape tunnel. This will be connected to the new tunnel about every 500 m with five cross passages. The cross passages permit rapid evacuation of the new tunnel in case of an incident.
Tunnelling started in autumn 2016 at the south portal in the village of...