On 28/02/2018 21:31, Vao Matua wrote:

What I would like to do is simply merge a node of the road and a node of the stream and give it the tag tunnel=culvert (when I do this JOSM complains)
Because that would then be a ford rather than a culvert - you're implying that at a certain point (the joining node) you've got your feet on the road and in the stream?


In the case where a culvert carries a watercourse over a road then it would make sense to create a way and layer=1

That sounds (at least in English English) like some sort of bridge (aqueduct) rather than a culvert - though this did come up the last time that culverts were discussed on this list** - someone found an old picture of a car going over a bridge over a culvert and thought that the picture's title ("the culvert") referred to the bridge.

If you genuinely don't know how a road crosses a waterway then you can of course just have the one crossing the other.  QA sites will flag this as an error (which is correct - it is) but if you don't have any information about how to correct the error (is there a ford?  bridge? is there no bridge but the stream runs in a box culvert?) then to my mind there's no problem leaving the "error" there so that someone who has more information can correct it.

Best Regards,

Andy

** https://duckduckgo.com/html?q=culvert%20site%3Ahttps%3A%2F%2Flists.openstreetmap.org%2Fpipermail%2F gets some hits.  There were also a bunch of discussions around the time that https://wiki.openstreetmap.org/wiki/Proposed_features/Simple_one_node_bridge was created - so have a look at the lists then.


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