The Bever–Scuol-Tarasp railway is part of the RhB mainline network, so the kilometrage (chainage) has its zero point in Landquart.

Friedrich Hennings, who had already designed the Albula Railway, had been working on a project for a technically and financially feasible line through the Engadine.

[2] In 1907, a project was finally presented, which provided for a 49.5-kilometre (30.8 mi) line with a total of 17 tunnels and 55 major bridges.

Originally it was to be finished in the summer of 1912, but the engineers and workers encountered unexpected tunneling problems between Guarda and Scuol.

On 29 August 1911, a 30 m (98 ft)-high wood frame collapsed on itself at the Val Mela viaduct between Cinuos-chel and Brail causing the death of twelve Italian construction workers.

In memory of this misfortune, the cause of which was never established, there is a plaque on the portal of the entrance of the Brail 1 Tunnel, which was last restored in 2003.

[4] As a result of the BLS's electrical test operation on the Spiez–Frutigen line, the Rhaetian Railway became interested in the new traction technology using single-phase alternating current.

The Rhaetian Railway thus decided to use the Bever–Scuol line, which was still under construction, as a test track for single-phase alternating current.

[5] A train crashed onto a fallen boulder on the approach to the Magnacun Tunnel between Guarda and Ardez on 22 March 1927.

The engine driver died and a travelling Bahnmeister (an official in charge local of track maintenance) was badly injured, but the passengers escaped injury.

[6][7] A strange accident occurred on 30 April 2012, when late in the evening a train on the Scuol-Tarasp–Klosters route collided with a brown bear called M13 at Ftan Baraigla station.

[8] The so-called Lower Engadine line starts at the Bever junction station, where it branches off from the Albula Railway from Samedan and St. Moritz to the north and Filisur, Thusis and Chur to the south.

The line now runs on the still wide left side of the valley of the Upper Engadine at a 2.0% gradient through the stations of La Punt Chamues-ch, Madulain, Zuoz und S-chanf to Cinuos-chel-Brail.

After Zernez, the line changes to the left (northern) side of the valley on a large steel bridge and then runs on constant gradient of 2.0% through several small tunnels to Susch.

The Lower Engadine line continues along the left side of the valley and arrives at Sagliains and the north portal of the Vereina Tunnel.

All trains that serve part or all of the Engadine line stop in Zernez and it is also connected by Postbus services over the Fuorn Pass and through the Val Müstair to Müstair, Santa Maria and Mals in Italy, where it connects in turn to the Merano–Mals railway to Merano and Bolzano.

Freight trains containing swap bodies regularly run to Zernez, from where they are transported by truck to the Val Müstair.

Scuol-Tarasp station is located on the western edge of the village of Scuol at an altitude of 1,287 m (4,222 ft) in the Lower Engadine.

Regular bus routes to Ftan, Tarasp, Samnaun, Martina, Sent, S-charl and Val Sinestra start at the station.

The results of the studies were presented at a 2013 meeting; the funding requirement was estimated at around €1 billion, depending on the route chosen.