Correcting use of `alt_name` for bridge ref numbers

Hello fellow mappers,

I would like to suggest a mechanical edit to correct a tag value in Quebec.

I have noticed that the bridges use the alt_name tag instead of the bridge:ref tag when tagged on ways that have a bridge=* tag.

I suggest a simple change with an automated edit, move the values of alt_name to the bridge:ref key.

The following Overpass Query can be used to find all the uses of alt_name on bridges

out body;
out skel qt;

This edit could be carried out in JOSM by simply selecting all the ways and changing the alt_name for the bridge:ref key

Thank you

I notice that the tags appear in only a small portion of the province. Are they from an incomplete import? Is the same information tagged in another way in other places?


Indeed the tags seem to only appear in the Centre-du-Québec and Chaudière-Appalaches regions.

I have no clue where they come from, the tags don’t seem to come from an import from what I can tell. They seem to have been added during corrections/additions to the CanVec import

There doesn’t seem to be another way that I have seen these bridge reference numbers tagged as.
Some contributors I saw that added the initial ref data PierZen and Robert66

They definitely aren’t alternate names for the roads they carry

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I have carried out the change in the following changeset: Changeset: 142731222 | OpenStreetMap

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