Immediately after the fall of the Berlin Wall, the traffic for the S-Bahn in Berlin as well as long distance train traffic to and from Berlin increased dramatically. At first, to immediately ease travel between East- and West-Berlin, the walls and barriers that were built to separate the station were removed. By July 1990, the severed tracks on platform "C" were reconnected, and after almost 29 years, there was again uninterrupted traffic on the Stadtbahn viaduct line from Berlin Alexanderplatz station to Berlin Zoo station. Very little maintenance had been done to the station during the East German years, and especially the underground section looked like a relic from a different time.