Jungfrau railway

Jungfrau railway

Locale Bern/Valais, Switzerland
Line length 9.3 km (5.8 mi)
Track gauge 1 Metre (3 ft 3 38 in)
Minimum radius 100 m
Electrification 3-phase, 1,125 V, 50 Hz
Highest elevation 3,454 m (11,332 ft)
Maximum incline 25 %
Rack system Strub
Route diagram
Jungfraujoch - 3,454 m (11,332 ft)
Eismeer Viewpoint - 3,158 m (10,361 ft)
Eigerwand Viewpoint - 2,864 m (9,396 ft)
Line to Lauterbrunnen
Eigergletscher - 2,320 m (7,612 ft)
Kleine Scheidegg
Line to Grindelwald

The Jungfrau railway (German: Jungfraubahn, JB) is a metre gauge (3 ft 3 38 in gauge) rack railway which runs 9 kilometres (5.6 mi) from Kleine Scheidegg to the highest railway station in Europe at Jungfraujoch (3,454 m), between the Bernese Oberland and Valais in Switzerland. The railway runs almost entirely within the Jungfrau Tunnel, built into the Eiger and Mönch mountains and containing two stations in the middle of the tunnel, where passengers can disembark to observe the neighbouring mountains through windows built into the mountainside. The initial open-air section culminates at Eigergletscher (2,320 m), which makes it the second highest open-air railway in Switzerland.[1] The line is electrified at 3-phase 1,125 volts 50 Hertz, and is one of four lines in the world using three-phase electric power.

At Kleine Scheidegg the JB connects with the Wengernalpbahn (WAB), which has two routes down the mountain, running respectively to the villages of Lauterbrunnen and Grindelwald. From both villages, branches of the Berner Oberland Bahn (BOB) connect to the Swiss Federal Railways at Interlaken.[2]

The line is owned by the Jungfraubahn Holding AG, a holding company that also owns the Wengernalpbahn and Lauterbrunnen–Mürren mountain railway railways. Through that holding company it is part of the Allianz - Jungfrau Top of Europe marketing alliance, which also includes the separately owned Berner Oberland Bahn and Schynige Platte railways.[3][4]


Construction of the Jungfraubahn
Map of the Jungfraubahn project in 1903
Share of the Jungfraubahn-Gesellschaft, unissued



2008 proposals

In early 2008, Jungfraubahn Holding AG announced it is exploring the futuristic idea of an efficient fast form of access to the Jungfraujoch as an addition to the rack railway. A feasibility study has been commissioned. The additional access would be the world's longest tunnel-lift system. The study is to show if and how such a tunnel-lift system - for example as a fast lift or funicular - from the Lauterbrunnen Valley to the Jungfraujoch could be realised without disturbing the unique landscape of the UNESCO World Heritage site.

The attractiveness of the cogwheel railway should thus be enhanced, as guests could use the fast lift for the uphill or downhill journey. Through a marked reduction in travelling time, the trip to the Jungfraujoch could also become a half-day excursion.

Rolling stock

Since most of the railway is inside a tunnel, it was designed to run with electricity from conception. The latest rolling stock consists of twin-unit motorcoaches carrying up to 230 people per train which operate at 12.5 km/h on the steepest parts of the ascent. The motors function at two speeds which allows the units to operate at double this speed on the less steep part of the ascent (above Eismeer station).

The motors will operate in a regenerative mode which allows the trains to generate electricity during the descent, which is fed back into the power distribution system. Approximately 50% of the energy required for an ascent is recovered during the descent. It is this generation that regulates the descent speed.

Snow clearing equipment is essential on the open section of line between Kleine Scheidegg railway station and Eigergletscher railway station. Originally snow ploughs were used but more recently snow blowing equipment has been brought into service.

The railway also operates some dedicated freight vehicles to supply the visitor facilities at Jungfraujoch, including a tank to transport additional water.

Main characteristics

Altitude of top station above Sea Level 3454 m
Difference in height 1393 m
Operational length 9.3 km
Gauge 1,000 mm (3 ft 3 38 in)
Rack rail type Strub
Operational Speed 12.5 km/h (25 km/h on shallower gradients such as above Eismeer)
Steepest gradient 25%
Smallest curve radius 100 m
Tunnels3: longest 7122 m, shortest 110 m. 80% of length of the entire railway.
Power system 3-phase 50 Hz 1125Volt

See also


  1. After the Gornergrat railway (3,090 m)
  2. Eisenbahnatlas Schweiz. Verlag Schweers + Wall GmbH. 2012. p. 82. ISBN 978-3-89494-130-7.
  3. "Jungfrau Railway Holding AG". Jungfraubahn. Retrieved 2013-02-12.
  4. "Jungfraubahn Holding AG + Berner Oberland-Bahnen AG". Jungfraubahn. Retrieved 2013-02-12.
  5. Between Heaven and Earth. History and technology - science and research on the Jungfraujoch - Top of Europe, Jungfraubahnen.
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