As early as 1975, the administrative council of the government of the Swiss Canton of Graubünden, presented the first white paper calling for the construction of what would become the Vereina Tunnel.

[2] Its construction was motivated by a desire to improve the all-weather transport links in the eastern part of Canton of Graubünden, as the Flüela Pass (between Davos and Susch) is prone to heavy snowfall and avalanches in the winter months.

According to the operator, its completion shortened the journey time through the mountain to roughly 18 minutes, improving the route's attractiveness for commuter traffic, as well as better facilitating tourist access to and from the Engadin.

[7] Since its completion, multiple safety-related modifications to the tunnel have been performed, largely due to changes in standards that have elevated safety requirements.

[8] During the 2010s, the Zurich Electricity Works established a district-heating network adjacent to the tunnel that primarily uses water drawn from area around the north portal for geothermal energy.