In 1875, the first plans for a railway on the route later taken by the Wengernalp line were drawn up, but the high projected costs meant that the concession expired.
Fifteen years later, in 1890, Leo Heer-Bétrix gained a new 80-year concession to build and operate the railway.
The Wengernalpbahn was founded.

Construction work commenced in 1891, and the following year the first steam locomotive reached Wengen on 18 April and Kleine Scheidegg on 10 August.
The full length of the line, from Lauterbrunnen to Grindelwald, opened on 20 June 1893 as a summer only service.

The electrification of the line between Lauterbrunnen and Kleine Scheidegg was completed on 3 June 1909 using 1500 V DC, with electric locomotives positioned, for safety reasons, at the lower end of the trains.
The section between Grindelwald and Kleine Scheidegg followed on 24 June 1910.
Steam operation ceased in 1912.

On 7 July 1910, a new route, longer but less steep, was opened between Lauterbrunnen to Wengen.
The older route was retained for nearly a hundred more years, being finally decommissioned and dismantled in 2009 because of the steep gradient of 25% and concern over geological stability on parts of the route.

In 1913, winter operations commenced between Lauterbrunnen to Kleine Scheidegg, followed by year round operations over the same section in 1925.
Winter operations between Grindelwald and Kleine Scheidegg started in 1934, followed by year round operations in 1960.

In 1942, the headquarters of the railway moved from Zurich to Interlaken.
In 1947, the first motorcoaches were purchased.
The following year the partly underground turning triangle at Kleine Scheidegg was constructed.

In 1990, an avalanche shelter was built on the Lauterbrunnen side of the operation, whilst in 1995 Wengen station was rebuilt to include a freight delivery terminal.
In 2005, Wengernalp station platforms were extended from 127 m to 181 m usable length.
In 2011, a new double track loop was opened between Wengen and Allmend, allowing the introduction of a clock-face timetable between Lauterbrunnen and Kleine Scheidegg.
In 1875, the first plans for a railway on the route later taken by the Wengernalp line were drawn up, but the high projected costs meant that the concession expired. Fifteen years later, in 1890, Leo Heer-Bétrix gained a new 80-year concession to build and operate the railway. The Wengernalpbahn was founded.
Construction work commenced in 1891, and the following year the first steam locomotive reached Wengen on 18 April and Kleine Scheidegg on 10 August. The full length of the line, from Lauterbrunnen to Grindelwald, opened on 20 June 1893 as a summer only service.
The electrification of the line between Lauterbrunnen and Kleine Scheidegg was completed on 3 June 1909 using 1500 V DC, with electric locomotives positioned, for safety reasons, at the lower end of the trains. The section between Grindelwald and Kleine Scheidegg followed on 24 June 1910. Steam operation ceased in 1912.
On 7 July 1910, a new route, longer but less steep, was opened between Lauterbrunnen to Wengen. The older route was retained for nearly a hundred more years, being finally decommissioned and dismantled in 2009 because of the steep gradient of 25% and concern over geological stability on parts of the route.
In 1913, winter operations commenced between Lauterbrunnen to Kleine Scheidegg, followed by year round operations over the same section in 1925. Winter operations between Grindelwald and Kleine Scheidegg started in 1934, followed by year round operations in 1960.
In 1942, the headquarters of the railway moved from Zurich to Interlaken. In 1947, the first motorcoaches were purchased. The following year the partly underground turning triangle at Kleine Scheidegg was constructed.
In 1990, an avalanche shelter was built on the Lauterbrunnen side of the operation, whilst in 1995 Wengen station was rebuilt to include a freight delivery terminal. In 2005, Wengernalp station platforms were extended from 127 m to 181 m usable length. In 2011, a new double track loop was opened between Wengen and Allmend, allowing the introduction of a clock-face timetable between Lauterbrunnen and Kleine Scheidegg.
Wengernalp Railway