The ground-breaking ceremony for the construction of the third tube took place in the afternoon of the 21st of November in the presence of the employer, the representatives of the municipality, the designing engineers, the site supervision and the consortium partners of ARGE Marti Gubrist.
The blasting works on the portal area towards Zurich-Affoltern will begin in September 2017. As for the Weinigen side, the excavation in counter-jacking with pipe screens is expected to last for the entire year of 2018. The whole tunnel tube will be excavated by fall 2019. The new tunnel will be put into operation as of 2022.