page_title: U6 (Berlin U-Bahn)
section_title: Completion of line 6
hierarchical_section_title: U6 (Berlin U-Bahn) / History / Completion of line 6
caption_attribution_description: English: Ullsteinstraße underground station, Berlin, GermanyDeutsch: U-Bahnhof Ullsteinstraße, Berlin, Deutschland
context_page_description: U6 is a Berlin U-Bahn line, 19.9 km long line with 29 stations. It runs in a north-south direction from the Berlin locality of Tegel in the north via Friedrichstraße to Mariendorf, a locality in the southern part of the city. It is a so-called large profile line.
  During the Cold War, both U6 termini were in the former West Berlin but the line passed under East Berlin for a short section of its route. Five of its stations were sealed off by East German authorities and the trains went through these so-called “ghost stations” without stopping, while a sixth, Friedrichstraße, remained open primarily as a transfer station between the U6 and the S-Bahn lines using the north-south S-Bahn tunnel, but also as an official border crossing between East and West Berlin.
  It was formerly named "Cᴵ" from 1923 to 1928.
context_section_description: As with the northern extension to Tegel, ever since construction of Line C began it was planned to extend it to Alt-Mariendorf as the southern terminus. The Nazis had planned to extend the line even further south to the Mariendorf horse race track (Trabrennbahn Mariendorf). When work on the long-awaited extension began, there were debates about the cost and it was, for example, proposed to lay the track in a cutting next to the Tempelhofer Damm/Mariendorf Damm roads. The public transport company BVG objected, arguing that easy access to the Tempelhof municipal offices (Rathaus Tempelhof) and the main shopping street would only be possible with an underground line.
  The first pile for the 3.5-kilometer route was driven on 6 March 1961 and the Alt-Mariendorf terminus station was opened on 28 February 1966. The route is from the S-and U-Bahn station Tempelhof straight south along the Tempelhofer Damm to the Teltow canal. Similar to the construction of today’s U7 line to Rudow, the canal posed the biggest problem for the track in this area and an unusual solution was found. The U6 tracks are contained in a construction underneath and connected to the lower part of the road traffic bridge over the canal. The side with the northbound rail was built with enough space for the Ullsteinstraße station. Since the canal shipping required a vertical clearance of 4.6 meters, ramps were built to raise the road 1.2 meters above its original level.
  South of the Teltow Canal the U6 follows Mariendorfer Damm to the terminus station Alt-Mariendorf, which was built at the junction of the roads Reißeckstraße/Friedensstraße and Mariendorfer Damm. From here, several bus routes service the sparsely developed surroundings. This expansion completed the U6 line. Further extensions are not planned.
  Except for the Alt-Tempelhof station, all stations were designed by the architect Rainer G. Rümmler. As with the southern part of the U7 line, he used large rectangular ceramic tiles to surface the station walls.
caption: Ullsteinstraße station
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