I wonder if there are enough of them to warrant their own bridge=*, as there are so many kinds of bridges. I bet we can put a ford tag on the bridge - it might be a simple solution.
I agree with your suggestion of using boot bridge=yes and ford=yes as it is usually a bridge but sometime behaves like a ford. I would avoid flood_prone=yes as it is made to be used when reasonably submerged. Adding depth=0 (or -0.5 ?) to indicate that the ford aspect is usually dry. (depth is not really used with bridge=* : 14 over 2400000).
Eric _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
