Ι.MAVRAKIS & PARTNERS S.A.
STRUCTURAL DESIGN OFFICE 

The total length of the tunnel is 1365m and is divided into four different section types according to the geological conditions of the area. 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.

In the main tunnel there are 40.00m long emergency parking lanes. The emergency evacuation tunnel is constructed 25.00m next to the main Tunnel. The two tunnels are connected with 3 evacuation corridors. The entrance of the tunnel is 19.00m long and is constructed using the cut & cover method.

 Our role: Detailed structural design