Scope of work
German Unity Transport Project VDE8
Upgraded and New Railway Lines between Nuremberg and Berlin
(Nuremberg-Ebensfeld-Erfurt-Leipzig/Halle-Berlin railway line) Silberberg Tunnel
DB Netz AG [German rail company]
Wayss & Freytag Ingenieurbau AG
as commercial leader of a joint venture
2009 to 2012
approx. € 264 million
The longest motorway tunnel in Germany is the centrepiece of the new A 71 federal motorway from Erfurt to Schweinfurt.
95 m preliminary cut, preliminary cut approx. 35,000 m³ 30 m north portal structure 462 m tunnel constructed by the mining method: Top heading and bench/invert heading in Tertiary hilly terrain
The approx. 2 km long „Stafelter Berg“ Tunnel, north of Luxembourg city is part of the new motorway section of ‚Route du Nord‘ and consists of two double-lane tubes. The tunnel drive was carried out conventionally and with the drill and blast method.