groberschnitzer
I agree, this does not look like a usual bridge. In addition the Mühlgang below the street and the house (2) is tagged as "canal", which is also wrong in my opinion (the Mühlgang is definitely not "schiffbar" at this point).

I would remove the bridge and change the Mühlgang to tunnel=culvert + layer=-1. This would make more sense, altough one could argue that usual culverts are probably much more narrow.