This is an underground station. It is called Warschauer Strasse. In fact, at this point the underground goes above the ground. This is the end of the line.
If you want to continue your journey not by bike but by public transportation, e.g. by suburban train, then you have to walk over a bridge.
Therefore you will see all day an endless stream of people walking over the bridge.
Another path.
This is my entry for the photo contest street photography, hosted by @photomatic and @victorcovrig, see the rules here.