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Lötschberg Tunnel
	The Lötschberg Tunnel from the north portal
Overview
Official name	German: Lötschberg Tunnel
Line	Lötschberg Line
Location	Circumventing the Lötschen Pass in the Bernese Alps in Switzerland; (Canton of Bern, canton of Valais)
Coordinates	46°22′08″N 7°45′14″E / 46.369°N 7.754°E – 46°28′41″N 7°40′01″E / 46.478°N 7.667°E
System	BLS, SBB CFF FFS
Start	Kandersteg, canton of Bern, 1,200 m (3,900 ft)
End	Goppenstein, canton of Valais, 1,216 m (3,990 ft)
Operation
Work begun	7 March 1907
Opened	15 July 1913
Owner	BLS NETZ AG
Operator	BLS
Traffic	Railway
Character	Passenger, Freight, Car Transport
Technical
Length	14.612 km (9.079 mi)
No. of tracks	One double-track
Track gauge	1,435 mm (4 ft 8+1⁄2 in) (standard gauge)
Electrified	15 kV 16.7 Hz
Highest elevation	1,239.54 m (4,066.7 ft)
Lowest elevation	1,200 m (3,900 ft) (north portal)
Grade	3–7 ‰
Route map

Outline map of the Lötschbergbahn between Spiez and Brig in Switzerland, showing the part from Frutigen to Brig. Note the double loop completed with a 270 degree spiral tunnel between Kandergrund and Felsenburg (ca. km 60 and 70) and the straight stretch of the Lötschberg tunnel between km 75 and 90. — The Lötschberg Tunnel in the outline of the Lötschberg Line showing the planned straight and realized curved tunnel between km 75 and 90. Positions are indicated in travel distance from Bern in [km].^[1]

The Lötschberg Tunnel is a 14.612 km (9.079 mi) long railway tunnel on the Lötschberg Line, which connects Spiez and Brig at the northern end of the Simplon Tunnel cutting through the Bernese Alps of Switzerland. Its ends are at the towns of Kandersteg (2 km away) in the canton of Bern and Goppenstein in the canton of Valais.^[2] The top elevation of the tunnel is 1,240 m (4,070 ft) above sea level, this is the highest point of the main Swiss railway network.

Construction began in 1907 and suffered delays by several severe accidents.

February 1908: An avalanche destroyed a hotel that the workers lived in, killing 13.
July 1908: The tunnel broke into a deep fissure below the Gasterntal valley and flooded with water and glacial deposit from the fissure, killing 25, and 1554 meters (5100 feet, 0.9656 mile) of the tunnel had to be abandoned and sealed off and replaced by a curved bypass.
March 1911: Breakthrough was achieved
3 June 1913: Finalization
15 July 1913: Regular service through the Lötschberg Tunnel began in 1913.

The tunnel is a single bore twin track.

The BLS AG company offers a car transport service through the tunnel, between Kandersteg station and Goppenstein station, for accompanied vehicles. The journey time of approximately 20 minutes, passengers remain in their cars in open sided car transport vehicles. At peak times, the car transport service operates in each direction every 7½ minutes.

The new Lötschberg Base Tunnel, opened on June 15, 2007, has been constructed some 400 m (1,312 ft) below the level of the current Lötschberg Tunnel as part of the NRLA (New Railway Link through the Alps) project.

Car transport through the Lötschberg tunnel (Kandersteg)

References

^ Röll, V. Freiherr von: Enzyklopädie des Eisenbahnwesens, Band 2. Berlin, Wien 1912, p. 256 on www.zeno.org/Roell-1912
^ Eisenbahnatlas Schweiz. Verlag Schweers + Wall GmbH. 2012. p. 45. ISBN 978-3-89494-130-7.