Gotthard Rail Tunnel Upgrade Costs Rise.
Renovation work at Switzerland’s Gotthard Base Tunnel could become significantly more expensive due to delays in replacing the tunnel’s aging radio communication system.
According to reports, the upgrade project has encountered major setbacks linked to technical and organisational problems involving external suppliers, as well as the difficulty of accessing sections of the tunnel for maintenance work.
The communication system plays a vital role in tunnel operations. It allows train drivers to communicate with control centres and other trains while also enabling passengers to access mobile phone and internet services deep inside the Gotthard mountain corridor.
The system was originally scheduled for replacement during planned maintenance work between 2024 and 2026. However, the project has fallen behind schedule, raising concerns about additional infrastructure costs.
As a result of the delays, Swiss Federal Railways (SBB) must reportedly extend existing operational contracts for at least two more years, with a possibility of extending them further up to six years.
The maximum projected additional cost is expected to exceed CHF4.6 million, although railway officials noted that some operational expenses would have been necessary regardless of the delays.
Reports also suggest that authorities are considering abandoning the current replacement project entirely as an alternative solution.
The Gotthard Base Tunnel is one of the world’s most important rail infrastructure projects and serves as a key transport corridor linking northern and southern Europe through Switzerland.

