Unable to answer "How are the footpath and bicycle path laid out here?" – Path – https://osm.org/way/17989560 via StreetComplete 63.0:

Beidseitige Beschilderung für Fußweg auf der gesamten Brückenbreite.

Attached photo(s):
https://streetcomplete.app/p/339687.jpg
https://streetcomplete.app/p/339688.jpg