Swiss Tunnel Congress 2026

The Swiss Tunnelling Society (STS) has been organizing the Swiss Tunnel Congress (STC) since 2006. In recent years, the STC has established itself as the leading congress for tunneling professionals in Switzerland. The congress originally evolved from the AlpTransit conferences.

On average, approximately 800 experts from over 10 nations attend the STC to experience high-quality technical presentations. Additionally, the event traditionally features excursions to major do-mestic tunnel construction sites.

Building on its past success, the STS is gradually further developing the Swiss Tunnel Congress (STC). In recent years, the range of topics for lectures and excursions has been broadened beyond base tunnels. To further increase the attractiveness of the STC for visitors, an Advisory Board was founded at the STC 2008, and the Swiss Tunnel Colloquium was introduced.

Since 2008, a half-day colloquium has been held on the day before the main congress. The Swiss Tunnel Colloquium is organized by the STS Committee in collaboration with the STS young members (STSym). The colloquium examines a specific topic from the perspective of various stakeholders (owners, planners, contractors, industry, and universities). Through this, the STS aims to provide the industry with an opportunity to present itself to a wide audience. The presentations at the Swiss Tun-nel Colloquium follow a specific lead theme each year.

Since 2024, the STC is no longer held annually but only in even-numbered years. In odd-numbered years, the Swiss Tunnel Day (STDay) takes place.