Unable to answer "How wide is the bicycle path here?" – Foot Path – https://osm.org/way/72763209 via StreetComplete 56.1:

Welcher Radweg? Hier gibt's nur Straße, Parkrand, Gehweg

Attached photo(s):
https://westnordost.de/p/199853.jpg
https://westnordost.de/p/199854.jpg