The ring railway overpass, where the U - Bahn line under the roadway of the Imperial dam was hooked, so was arranged through the intersecting ring line is located immediately east of the station Kaiserdamm. It is thus an unusual bridge construction, but there would have been considerably higher construction costs due to the significant depth situation of underground in the case of a crossing of the ring line trench. The cost would be so high, because the entire route is already up to the Theodor-Heuss-Platz on a climb and the subway would have been thus on a long way in a very large depth.<br><br>At the beginning of the 1960s the bridge had to significantly rebuilt to accommodate in addition to the ring line now on both sides of the each three-lane motorway was. This was only possible if the Emperor's Dam Bridge is considerably extended. On this occasion, the railings on the sidewalks against new constructions were exchanged. Parts of the old railing were further used as facing a staircase leaving the platform of the U1 around 1970 in the Fehrbelliner Platz underground station.<br><br>The Metro since 1908
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