Unfortunately on Sunday cross-walks at the roundabout close to the university will get restored. That's necessary due to some of them wasted away to a state that no one can identify them as crosswalks (some still might...). Pedestrians, cyclists an railway travellers should be able to pass freely.
Streetworks are scheduled from 6am to about 1pm. During that time we suggest reaching Hochschule Bonn-Rhein-Sieg by different routes. Suggestions can be found here. This might cost you a little bit of extra time but staying at the parking lot between university and Huma-Shopping centre is still free. We are sorry for the inconvenience.