page_title: U7 (Berlin U-Bahn)
section_title: Extension to the west
hierarchical_section_title: U7 (Berlin U-Bahn) / History / Extension to the west
caption_attribution_description: English: Subway Altstadt Spandau U7 Berlin Deutsch: Altstadt Spandau U7 Berlin
context_page_description: The U7 is a rail line on the Berlin U-Bahn. It runs completely underground for a length of 31.8 kilometres through 40 stations and connects Spandau, via Neukölln, to Gropiusstadt and Rudow. The line was originally the south-eastern branch of the Nord-Süd-Bahn that ran between the branching point at Belle-Alliance-Straße and Grenzallee; however, in the 1960s, this stretch was separated from the rest of the line and extended at each end to form a new line. As of 2007, the U7 is Berlin's longest underground line, both in terms of absolute length and total travel time, and one of the longest subterranean lines in Europe.
context_section_description: The branch station Belle-Alliance-Straße (later renamed Mehringdamm), which opened in 1924, had three tracks: a connection to Tempelhof led from the first platform; to Neukölln from the second; and to the city centre from the third. A separation of the Neuköllner branch from the North-South Line was decided upon in order to avoid an overload on the transfer station Hallesches Tor. Therefore, Line 7 was extended west from Belle-Alliance-Straße. The construction work began in the middle of 1962, and was completed on 26 February 1966 with the link to Möckernbrücke station. Beside the construction of Möckernbrücke station, changes to Mehringdamm station—which would become a transfer point between unbranched lines—were necessary.
  The further extension of Line 7 was accomplished with subsidy funds. The construction of the track from Möckernbrücke to Fehrbelliner Platz started on 1 July 1962, and finished on 29 January 1971.
caption: Altstadt Spandau: Last station before the terminus Rathaus Spandau
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