Ulriken Tunnel

The Ulriken Tunnel (Norwegian: Ulrikstunnelen) is a railway tunnel on the Bergen Line between Bergen Station and Arna Station in Bergen Municipality in Vestland county, Norway.

For the proposed road tunnel, see Arna Tunnel.
Ulriken Tunnel
Entrance from Arna Station
Overview
LineBergen Line
LocationBergen, Norway
SystemNorwegian railway
StartArna Station
EndBergen Station
Operation
Opened1964
OwnerNorwegian National Rail Administration
OperatorNorwegian State Railways
CargoNet
Technical
Line length7,670 meters (25,160 ft)
No. of tracksSingle track
Track gauge1,435 mm (4 ft 8 1⁄2 in)
Electrified15 kV  16.7 Hz AC
Operating speedMax. 130 km/h (old tunnel), 160 km/h (new tunnel)

Original (Old) Tunnel

The existing 7,670-meter (25,160 ft) long tunnel runs under the northern part of the mountain Ulriken in Bergen. 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.[1] Work on boring the 7.7km 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 celebrated the successful completion of boring the New Tunnel. The next step is to blow 16 crossings from the New to the Old tunnel, and to fit out the tunnel ready for use by railway traffic. Completion of the new double-track tunnel is expected in 2020.[2]

References
  1. Aagesen, Ragnhild (21 September 2010). "Bergen-Arna" (in Norwegian). Archived from the original on 20 September 2011. Retrieved 20 September 2011.
  2. Smith, Kevin. "Norway celebrates Ulriken tunnel breakthrough". Retrieved 2017-09-04.

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