for trains to/from Grunewald yard reversing to/from Spandau. An island platform was built on the Ringbahn at right angles to and above the two Stadtbahn platforms. The entrance and exit to the station building was made from the Ringbahn platform via a pedestrian bridge. Structural provisions were made for a second Ringbahn platform if traffic warranted. Likewise, the station building could have been extended to the west and given a separate entrance to the Stadtbahn platforms. Ausstellung station was opened on 10 December 1928. While the Stadtbahn platforms were used by electric trains from the beginning, only steam-hauled trains ran on the Ringbahn platform until 18 April 1929. 16,000 to 20,000 passengers were expected to transfer traffic between the Stadtbahn and the Ringbahn on weekdays and around 700 trains stopped at the station every day. After a possible thinning of the traffic on the north and south ring curves, up to 50,000 passengers were expected. In addition, there were another 50,000 passengers who were expected to attend exhibitions. The name was changed to Westkreuz on 15 January 1932. The Nazi Party plans to transform Berlin into Germania envisaged relocating long-distance traffic to the Ringbahn. Westkreuz station was to be redeveloped with a western extension that would provide a link to the Grunewald carriage sidings. Plans from 1941 included the building of two additional platforms on the S-Bahn tracks on the Stadtbahn. Five platforms would have been built to the north and four platforms to the south for long-distance traffic. Two Ringbahn platforms, one each for the S-Bahn and steam-hauled passenger trains, were to be built on the lower level. These plans were never finalised. From the beginning there were problems with the subsoil, which consists of a sand-filled ice age meltwater channel. Settlement damage occurred during construction, including the signal box tilting. The Ringbahn train shed also sagged, with differences in settlement of up to 60 centimetres. Therefore, it had to be rebuilt over and over again. In 1968, the Reichsbahn began the largest rebuilding to date: the Ringbahn train shed was hydraulically raised, new foundations were laid, and an attempt was made to build deep foundations. This work dragged on until 1976. The closure of the S-Bahn after the Berlin S-Bahn strike in 1980 also affected Westkreuz station. There was only minimal traffic on the Stadtbahn and no operations on the Ringbahn. Even after the BVG took over the