After the completion of the Riedberg Tunnel, the work will be carried out in the west over the Tennen bridges and in the east to the Schnidrigu underpass and connection to the existing A9 motorway.

Work West: Access to drainage boreholes, access to technical transverse sewer, completion of Tennen bridges, design/BSA pipe systems/route, MÜLS and FZRS foundations, BSA civil engineering;

Work East: Access roads retention basins/drainage tunnels, retaining wall, drainage/BSA pipe systems/route, noise barriers, MÜLS and FZRS foundations, BSA civil engineering, Eischoll stream;

Work tunnels: decking, decking banquettes;

Cable conduits 10,600m, excavation 1,800m3, route removal 4,100m3, bulk material 10,000 m3, foundation layer 16,000m3, pavement 12,000t, concrete 950m3, reinforcement 113t, waterproofing 600m2, shotcrete 170m2, anchor 150m

After the completion of the Riedberg Tunnel, the work will be carried out in the west over the Tennen bridges and in the east to the Schnidrigu underpass and connection to the existing A9 motorway.

Work West: Access to drainage boreholes, access to technical transverse sewer, completion of Tennen bridges, design/BSA pipe systems/route, MÜLS and FZRS foundations, BSA civil engineering;

Work East: Access roads retention basins/drainage tunnels, retaining wall, drainage/BSA pipe systems/route, noise barriers, MÜLS and FZRS foundations, BSA civil engineering, Eischoll stream;

Work tunnels: decking, decking banquettes;

Cable conduits 10,600m, excavation 1,800m3, route removal 4,100m3, bulk material 10,000 m3, foundation layer 16,000m3, pavement 12,000t, concrete 950m3, reinforcement 113t, waterproofing 600m2, shotcrete 170m2, anchor 150m