Bygging av andre tunnelrør

To rehabilitate the existing Gotthard Road Tunnel, a second tunnel tube (2TG) will be built first. Lot 243 comprises the construction of the access tunnel and the north logistics excavations. The project serves for the preliminary development of the north fault zone and for the provision of the underground logistics excavations.

Adkomtstunnel på 4 km

The 4 km long access tunnel to the north fault zone runs parallel to the future second tunnel tube. The tunnel will be excavated with a Gripper TBM with a diameter of 7.03m. Additionally, a 150 m long cavern and several galleries for logistics routes with a total length of 750 m will be excavated by blasting. In the portal area, loose rock will be penetrated by means of pipe shields over a total length of 100m with 2 drifts.

Utfordringer og totalt budsjett

The project faces several challenges, including mechanical tunnelling in the hard Aare massif and the danger from avalanches. The construction is located in Göschenen, Switzerland, and the total value of services amounts to 86.5 million CHF. Construction began in April 2021 and is expected to complete by December 2023.

Eiere og entreprenører

The building owner is Astra, Filiale Bellinzona, and the contracting entity comprises Astra Projektverfasser: IG Nouvo Gottardo (Lombardi SA; B+S AG; ILF AG; Emch+Berger AG). The general management is handled by IG 2G-BN ARGE: ARGE secondo tubo (Implenia; webuild&CSC SA; Frutiger AG).