Milestone Achievement in Gotthard Tunnel Extension Project

Switzerland has reached a significant milestone in its transportation infrastructure with the commencement of excavation work on the second Gotthard road tunnel corridor. This historic development marks a crucial step in enhancing the nation's most vital north-south transport link through the Alps. Swiss Transport Minister Albert Rösti highlighted the significance of this achievement, describing it as 'a milestone for Switzerland's most important north-south link.' The project, approved by Swiss voters in 2016, demonstrates Switzerland's commitment to maintaining its position as a crucial European transport hub while ensuring sustainable alpine crossing solutions.

At the heart of this ambitious project are two state-of-the-art tunnel boring machines, including the impressive 'Paulina,' which stretches 150 meters in length and features a massive drill head measuring over 12 meters in diameter. These engineering marvels, manufactured in Germany and assembled on-site since last summer, represent the pinnacle of tunnel boring technology. The machines are currently deployed at both ends of the planned tunnel - one in Airolo and another in Göschenen - working simultaneously to expedite the excavation process. Minister Rösti praised the technical excellence, noting that 'The impressive tunnel boring machine is a symbol of innovation and technical excellence.'

The 17-kilometer tunnel excavation is scheduled for completion by 2027, with the entire project expected to be operational by 2030. Following completion, the tunnel will initially operate with two-way traffic for three years, allowing for the renovation of the original 1980 tunnel. The long-term plan involves single-lane traffic flow through both tunnels, optimizing traffic management and safety. Construction work began in 2020 with preliminary preparations, including the establishment of facilities to process the excavated rock material.

The project demonstrates Switzerland's commitment to sustainable infrastructure development. The excavated material is being repurposed in various ways: some will be used in Airolo to cover the freeway and improve the traffic-dominated valley floor, while another portion will contribute to renaturation measures in Lake Uri. Additionally, on-site processing converts excavated material into concrete for tunnel construction, minimizing waste and transport requirements. This approach reflects Switzerland's dedication to environmental stewardship while enhancing crucial transportation infrastructure.