German manufacturer Herrenknecht has unveiled the tunnel boring machine (TBM) that will be used to construct a new rail tunnel between Bergen and Arna in western Norway.
The 1,800t TBM was presented to the Skanska/Strabag joint venture that will construct the new Ulriken tunnel. In August the TBM will be shipped piece by piece from Herrenknecht’s headquarters in Schwanau, Germany and reassembled in Bergen.
The 7.8km tunnel will be constructed beside the existing Ulriken tunnel, which opened in 1964.
An upgrade of the original Ulriken tunnel is scheduled to take place when the new tunnel is opened to rail traffic in 2018. Work is expected to be complete in 2020.