Ulriken Tunnel

The Ulriken Tunnel is a double-track railway tunnel on the Bergen Line between Bergen Station and Arna Station in Bergen Municipality in Vestland county, Norway.

Original (old) tunnel

The existing long tunnel runs under the northern part of the mountain Ulriken in Bergen Municipality. Before the tunnel was opened in 1964, the Bergen Line ran via Nesttun. This stretch is now a heritage railway, the Old Voss Line. The tunnel has single track and is electrified.

New tunnel

The Norwegian National Rail Administration has plans for building a second tunnel through the mountain. Work on boring the tunnel began in January 2016 and it is the first in Norway to use a tunnel boring machine. On August 29, 2017 infrastructure manager Bane Nor and contractors Strabag and Skanska successfully completed the boring of the new tunnel. The next step was to cut out 16 crossings between the new and old tunnels, and to make the tunnel ready for use by railway traffic. The new double-track tunnel was opened in December 2020.