| Linelength Km: | 16.2 |
| Tracks: | 2 |
| Linenumber: | 122 01 |
| Map State: | collapsed |
The Verbindungsbahn, also known as the Stammstrecke, is a railway line in Vienna, Austria. It runs across Vienna, roughly east–west, connecting with most major railway lines in the vicinity of Wien Hauptbahnhof. The section between and, along with part of the North railway line, hosts most Vienna S-Bahn services.
The western end of the Verbindungsbahn is at, where it connects with the Western Railway and Suburban line. It runs to the south to connect with the Southern Railway and . Between and Wien Hauptbahnhof, the line runs parallel to the Southern Railway. It enters the 1235m (4,052feet)-long Schnellbahntunnel west of Wien Hauptbahnhof; the platforms for that station and are underground. After a section above ground, it enters another tunnel, where it connects with the . Both and are located in tunnels. North of Wien Mitte the line runs elevated, crosses the Donaukanal, and becomes the North railway line at .
In the Vienna S-Bahn network, the Stammstrecke begins at Wien Meidling, continues through Wien Praterstern, and terminates at on the North railway line, north of Wien Praterstern.[1] Services operating over this route include the,,, and .[2]
The eastern end of the line handles Regional-Express,Railjet, EuroCity, EuroNight, and Nightjet services bound for,, and points beyond.[3] [4]