Hamburg City S-Bahn

The City -S -Bahn is a 5380 m long tunnel section of the Hamburg S-Bahn. It runs between the station Altona and Hamburg Main Station under the Hamburg city center and the districts of Altona and St. Pauli. The S- Bahn lines S1, S2 and S3 of the Hamburg Transport Association will be guided through the tunnel. Six S -Bahn stations are in the tunnel, including the tourist attractions stations jetties and Reeperbahn.

Course

The tunnel begins immediately behind the central station, where the distance between the S- Bahn tracks of the connecting web dives. The ramp has a maximum gradient of 39.4 ‰, since even a few hundred meters further on the Inner Alster is tunneled. Under this and the Little Alster, the first breakpoint Jungfernstieg is under the same road. The route from there in a southwesterly direction, passing the breakpoint Stadthausbrücke and finally reaches the jetties. From there, it swings back northwestward, tunneled the Reeperbahn at the same breakpoint, then passes the breakpoint King Street from the south and reaches the tunnel Altona station. Here a four-track platform and reversing facility was built for the S-Bahn. Shortly thereafter, the train emerges with a maximum gradient of 40.0 ‰ from the underground parking area next to the high-lying S -Bahn trains on again and connects with the routes to and from Blankenese and Pinneberg, and the communication path from the main station.

History

In the 1960s Hamburg had only two S -Bahn lines about the shared path of the connection path. Through planning and construction of large housing Osdorfer Born and the consequent discussions on the transport infrastructure, this route proved to be bottleneck. The scheduled headway on the connecting train at the time is 150 seconds, the smallest possible distance signally at 90 seconds. Even the slightest deviations from the plan prepared enormous problems.

In addition, the junction line bypassed the entire city of Hamburg and the former neighboring town of Altona almost entirely by struck a large arc north of the former settlement core, because their line of architectural history is located on a part of the former ramparts. This resulted in the same decade, the planning for a tunnel route, which should open up the city center south of the junction line: the " City -S -Bahn ".

The project was started on October 14, 1967, and claimed a period of 14 years. The route proved to be extremely difficult, since in addition to the Alster Lake, which was tunneled almost at full length, the further course was oriented not always to the existing roads and instead a few blocks had to be extended. A particular challenge for the engineers was the Jungfernstieg: Here intersects the route with the older U -Bahn line U1 from the 1930s. Below the line of the City -S -Bahn came to 1973 two platforms for the new diameter line U2 of the Hamburg U -Bahn and the preplanned U4. Therefore, the system of the S- platform was chosen so that it is applied at the level exactly between the two metro lines. Despite these difficulties, the section Hauptbahnhof jetties could be opened on time as interim S -Bahn line S10 on June 1, 1975.

Besides the actual distance the two endpoints, Hauptbahnhof and Altona were fully expanded: In Altona existed before the construction of City -S -Bahn only one head station with ten tracks, two of the S-Bahn were reserved. First, the S -Bahn -Halle should only be abandoned and a tunnel station for this to be created. Then, however, the entire station building was demolished on the grounds that the risk of a collapse is too high as a result of tunneling. The new station was including the last remaining tunnel section between jetties and Altona opened to traffic on April 19, 1979.

As the extension to Harburg was planned during the tunnel, then a double-track tunnel station for S -Bahn trains to Altona was northeast of the main hall of the station. The two tracks of the S -Bahn in the main hall were prepared for the direction of traffic from Altona and completed the new S platform in 1981. This moved into the current track 5, which was previously used by the S -Bahn, be reintegrated into the station part for long-distance and regional traffic.

The third and final phase of construction included the connection between Altona and Diebsteich. With this connection, in 1981 the connection of the branch was prepared to Pinneberg to the City S-Bahn. Since connectivity for both trunk routes are enabled on the two outer branches, wherein for the compound from Blankeneser branch to the junction line continues in Altona, the direction must be changed ( " make head").

Others

The stops Stadthausbrücke Reeperbahn and are designed as so-called multi-purpose systems and can be upgraded in the defense or disaster to civilian shelters for every 4500 people. In addition, the shopping mall can also be converted on the platform of the Jungfernstieg in a shelter. In the stop jetties located between the overground platforms of the subway and the underground platform of the S -Bahn a two-part shelter for 180 people.