News ・ August 18, 2026

TELT (Tunnel Euralpin Lyon Turin)

 
 

TELT (Tunnel Euralpin Lyon Turin)

Amberg Engineering Supports the Delivery of the Lyon–Turin Base Tunnel 

Amberg Engineering is contributing to the delivery of the Lyon–Turin Base Tunnel, one of Europe’s most significant cross-border railway infrastructure projects. Following its involvement in the design phase, Amberg Engineering is supporting the project as a member of ALLTI (Alliance Lyon Turin Ingénierie), the international engineering consortium appointed by TELT (Tunnel Euralpin Lyon Turin) for engineering services on the French side of the project. 

According to TELT, ALLTI was awarded Lot 1, covering engineering services from the Villarodin-Bourget/Modane access adit. The consortium brings together Arcadis, BG Ingénieurs Conseils, Neosia, Lombardi Ingénierie and Amberg Engineering. The contract covers approximately 24 kilometres and includes the preparation of construction tenders as well as project management and construction supervision. 

Amberg Engineering has been involved in the Lyon–Turin project since the design and tendering stages.  In 2017, Amberg Engineering secured, together with its four consortium partners, responsibility for the design, tendering and construction-site supervision of CO5. 

Today, Amberg Engineering continues to contribute to the construction phase through the ALLTI consortium, supporting two major construction sections: CO5 and CO11. The company’s team includes four specialists, with three engineers assigned to CO5 and one employee supporting CO11. 

On CO5, Amberg Engineering, as part of ALLTI, supports the construction of a key section of the base tunnel in collaboration with the construction consortium comprising Eiffage Génie Civil, SPIE Batignolles, Ghella and COGEIS. The works include the assembly and launch of two tunnel boring machines (TBMs), each excavating approximately 18 kilometres to create the twin tunnel tubes. 

On CO11, Amberg Engineering supports activities related to the management and recovery of excavated materials, contributing to the project’s objectives for efficient resource management and environmentally responsible construction. 

The Lyon–Turin Base Tunnel forms a key part of the new rail connection between France and Italy. By providing a high-capacity railway connection across the Alps, the project is designed to strengthen European rail connectivity and support a shift of freight transport from road to rail, helping to reduce the environmental impact of cross-Alpine transport.  

Amberg Engineering’s continued involvement reflects its commitment to engineering excellence on complex underground infrastructure projects and to supporting the development of safer, more efficient and sustainable transport networks across Europe.