The total length of the tunnel is 1365m. The section shape of the main and the services tunnel is round and consists of two layers of support. The temporary support, which is formed using forepoling tubes and 20cm sprayed concrete and the permanent lining, which is formed by in-situ concrete. The emergency evacuation tunnel is constructed 25.00m next to the main Tunnel. The two tunnels are connected with 3 evacuation corridors.

 Our role: 

• Preliminary and Final Structural Design of the final lining 
• Preliminary and Final Structural Design of the tunnel’s portals