Güterhallenstraße ("freight hall street") runs northeast of the railway precinct.

In 1888, the tracks of the station were rebuilt as a result of the increasing volume of traffic on the Munich–Salzburg railway.

In 1892, construction began on a new, southwestern extension of the station building, which was completed in 1894.

In 1895, the branch line was completed to Ruhpolding, which had to be connected for topographical reasons to platform 1.

After the completion of this work, the station had four through platform tracks, a bay platform—where trains to and from Trostberg could reverse—and four sidings in the rear for parking.

The office for managing rail operations in Traunstein was dissolved on 1 February 1911.

On 20 April 1928, electrification of the railway station was completed; it involved replacing the pedestrian bridge with an underpass.

The station buildings were completely destroyed on 18 and 25 April 1945 during aerial bombardment in the closing stages of the Second World War.

The following facilities were planned: an operations room, a luggage hall, a ticket office, a lobby, lavatories, a station restaurant and upstairs apartments for railway employees.

Since 1986, signalling at Übersee station has been remotely controlled by the dispatcher in Traunstein.

Also, the former engine shed and the building of the supervisor of track maintenance (Bahnmeisterei) were removed.

Traunstein station is served by InterCity and EuroCity trains between Munich and Austria.

One pair of trains of line 32 runs from Münster or Dortmund to Klagenfurt under the name of Wörthersee.

The Austrian Federal Railways (ÖBB) Railjet trains running between Munich and Budapest via Vienna pass through the station every two hours without stopping.

ÖBB corridor trains running between Salzburg and Kufstein on the Rosenheim curve also pass through the station without stopping.