Altona–Blankenese railway

Altona-Blankenese railway
Overview
Locale	Hamburg and Schleswig-Holstein, Germany
Line number	1224, 1226
Technical
Line length	18.0 km (11.2 mi)
Track gauge	1,435 mm (4 ft 8 1⁄2 in) standard gauge
Electrification	1200 V DC
Route number	101.1, 101.11
Route map City S-Bahn from Landungsbrücken 5.898 Altona 6.083 6.269 0.916 City S-Bahn to Diebsteich Link line to Holstenstraße 1.827 Ottensen (planned) 2.525 freight line to Eidelstedt Gas works Ottensen Industrial Railway Margarine factory 2.803 Bahrenfeld since 19 May 1867 3,698 A 7 4.545 Othmarschen since 1 August 1882 6.126 Klein Flottbek since 19 May 1867 7.585 Hochkamp since 1897 (?) 9.827 9.283 Start of junction with Wedel railway (single track) 9.677 9.433 Blankenese since 19 May 1867 9.713 Reversing facility to Blankenese–Marienhöhe Trackless Railway Blankenese–Marienhöhe 11.328 0,000 Iserbrook since 31 October 1950 12.280 12.298  0,000 18 m reduction 12.554 0,000 Sülldorf since 1 December 1883 12.698 0,000 Sülldorfer Kirchenweg 13.375 0,000 Sieversstücken 14.895 0,000 2 tracks from here 15.287 0,000 Rissen since 1 December 1883 16.575 0,000 Hamburg–Schleswig-Holstein state border 17.589 0,000 Ölweiche 1 track from here 18.390 0,000 Autal 18.888 0,000 Wedel since 1 December 1883 Source: German railway atlas

The Altona–Blankenese railway is a railway line to the west of Hamburg. It starts at the Altona station and runs through Othmarschen to Blankenese station. This section of line was opened in 1867. 16 years later the line was extended to Wedel. It is now used by lines S1 and S11 of the Hamburg S-Bahn and was part of the first electrified suburban railway in Germany.

The line begins at Altona station, where there is a four-track underground S-Bahn station, which has an attached reversing facility. The City S-Bahn line runs up a steep ramp (with a maximum gradient of 4.0%) to the surface and shortly later the Altona–Blankenese line branches off the line to Pinneberg and turns west. It passes through the stations of Bahrenfeld, Othmarschen, Klein Flottbek and Hochkamp and then runs into the three-track terminal station of Blankenese.

Like the line from Hamburg, the Blankenese-Wedel extension is connected to the eastern end of the station, so trains have to reverse out of the station to continue their journey. The line then runs to the stations of Iserbrook, Sülldorf, Rissen and finally, the terminus at Wedel. Unlike the section east of Blankenese, the extension to Wedel is mostly single track.

The line was opened on 19 May 1867 between Altona and Blankenese, although the only intermediate stations opened at that time were at Klein Flottbek and Bahrenfeld. The Othmarschen station was opened on 1 August 1882 with the development of the villa estate (German: Villenkolonien) of Othmarschen. Hochkamp station was built later.