2nd Gotthard Road Tunnel – ILF awarded design services contract
moreAs part of IG Nuovo Gottardo, ILF has won a contract for further design works for the 2nd Gotthard road tunnel, the construction of which is scheduled to be completed in 2032. ASTRA, the Federal Roads Office, has extended the existing design services contract until the 2nd tube of the Gotthard road tunnel is opened to traffic.
The new main tube will be excavated using one TBM starting at each portal. The tunnel will be constructed using two shield machines as well as segmental lining. The excavation diameter will be 12.26 m. The northern section of the 2nd Gotthard road tunnel will have an excavated length of a little less than 8 km, and the southern section will have a length of a little more than 8 km. The inner lining of the main tube will be installed in the rear section simultaneously to the excavation works taking place in the front section. While the TBMs will excavate the last few kilometers towards the breakthrough, the structural works for the tube will be completed in the area of the portals. In the course of the design works, the experience gained during projects such as the Belchen Rehabilitation Tunnel could be used to the advantage of the client.
The scope of work rendered by ILF, as part of the IG, comprises the design services for two large underground control centers and a total of 67 cross-connections, some with sub-stations and some with expanded tunnel roof sections accommodating stations for longitudinal ventilation.
Within the IG, ILF takes on the role of partial project manager for underground structures as well as for the TBM northern section and the mined cross connections and for the main works for the underground control centers. In addition, ILF is currently in the process of completing the design works for the northern external facilities – the realization of which is scheduled for mid 2022.
