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Filder Tunnel western breakthrough
23 August, 2018
Germany – The TBM boring the western tube of the 9.5km twin tube Filder Tunnel broke through in late July. As Tunnels and Tunnelling goes to press, the 120m-long, 10.82m-diameter Herrenknecht multi-mode machine is being disassembled and turned around inside a 120m-long cavern. In autumn it will bore a 3.4km section of the eastern tube to complete the tunnel.