Verbindungsbahn (Stuttgart)
| Verbindungsbahn (Stuttgart) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Route number: | 790.1–6 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line number: | 4861 (Stuttgart Hbf–Filderstadt) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line length: | 9.4 km (5.8 mi) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Track gauge: | 1,435 mm (4 ft 8 1⁄2 in) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Voltage: | 15 kV, 16⅔ Hz AC | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Maximum incline: | 3.8 % | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Maximum speed: | 60–100 km/h (37.3–62.1 mph) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Route Information | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Country: | Germany | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Land: | Baden-Württemberg | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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The name Verbindungsbahn (German for connection line) is used in Stuttgart to describe the underground connecting line between the subterranean S-Bahn Stuttgart station at Stuttgart Hauptbahnhof (Stuttgart Hbf, the Stuttgart main station) and the tunnel exit at the station in Stuttgart-Österfeld, which connects, via tunnel, the Stuttgart valley and the Filder plateau. The term originates from the planning stages in the 1960s, when similar projects for the S-Bahn München and S-Bahn Rhein-Main were given the same term.
The tunnel, with a length of 8.788 km, is the longest S-Bahn tunnel in Germany, and was the longest railway tunnel of any kind in Germany from 1985 until 1988, when the Landrückentunnel was opened for service. The tunnel is made up of two sections: the 2.6 km-long S-Bahn line section from Stuttgart Hbf to the halt at Schwabstrasse, and the 5.5-kilometre-long Hasenberg tunnel, which ascends to the Filder plateau. As part of the project Stuttgart 21, the tunnel is scheduled to be extended by new underground construction, such as the new Rosenstein tunnel.
The first section of the tunnel was constructed between 1971 and 1978, mostly utilizing the cut-and-cover method of construction; only at the terminal loop and a short piece between the Hauptbahnhof and city center was the mining/boring technique of construction used. The second section, constructed between 1981 and 1985, utilized the mining method, with the exception of the halt at the University of Stuttgart.
Stuttgart mayor Arnulf Klett, in a letter to the Deutsche Reichsbahn dated 11 July 1949, as the railway operator was then still known, proposed the construction of a tunnel, roughly 1.2 kilometres in length, to run between the Hauptbahnhof and the Alter Postplatz, just south of the Rotebühlplatz; he also mentioned the willingness to undertake financial participation in the project by the city of Stuttgart. This tunnel was meant to absorb the suburban service utilizing electric multiple unit trains, which was started in 1933. In response, the Deutsche Bundesbahn underwrote a study, which was published in 1956 in the journal Die Bundesbahn. The initial plans envisioned an extension of that line to the Gäubahn (Stuttgart–Singen), which would also offer faster connections to commuters in the area to the south and southwest of Stuttgart. To achieve this, a tunnel with a grade of 50 per mille was planned, which would have connected to the Gäubahn just before the former halt at the Wildpark, and units of the DB Class ET 30 were slated for service. A new, four-track subterranean station, called Stadtmitte (city centre), was planned to be built underneath the then-under-construction Theodor-Heuss-Strasse, where half of the trains originating at the Hauptbahnhof would have turned around. The station underneath the Haupbahnhof was also meant to be expanded to four tracks to enable a concept to utilize the highest possible operational efficiency; this concept was later put into operation in the S-Bahn station under the Frankfurt Hauptbahnhof. Another subterranean station, with the name Schwabstrasse, was planned for the west of Stuttgart.
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Wikipedia