Rehabilitation of the head race tunnel with downstream access tunnel and bypass tunnel
While investigating on the trail of the beginnings of the universe – in the nuclear research centre CERN the quarks go to the racecourse. The tunnels and caverns for the biggest machine in the world were built by Wayss & Freytag Ingenieurbau.
The Silberberg railway tunnel in the Thuringian Forest is part of the new Ebensfeld – Erfurt railway line. The new line connects the old and the new federal states.