Bauer Spezialtiefbau has announced that it part of a joint venture that is working a major rail upgrade in Germany by Deutsche Bahn.
Under the contract Bauer is working with Alfred Kunz Untertagebau, Baresel, Schaelerbau Berlin and Leonhard Weiss & Co to deliver the foundations elements of the project to bypass an outdated railway tunnel.
The Schwarzkopf Tunnel on the lines between Wuerzburg and Frankfurt no longer meets modern railway standards and trains must slow to 70kmph to pass through and freight trains need a second locomotice to cope with the gradient.
The project involves construction of four new tunnels to reduce the grade, including the 2.6km long Falken Tunnel.
Bauer’s work on the scheme has been valued at €43M (£34M) and involves construction of 2.8km of cut and cover sections on the route using piled and retaining walls, 50km of piled lengths to support new embankments and a 550m section of the route also calls for soil nailing, anchoring and other reinforcement. Bauer will also deliver shotcrete to support the new tunnel portals.
Ground conditions include diorite, gneiss, and Bundsandstein sandstones through which Bauer will drive piles up to 25m in length.
Bauer has said that its part of the work will be completed by autumn next year and the overall project will be completed by the end of 2017.