What's "foundation"? It's a structure. Keep using `bridge:support=` for `=pier` or whatever it is. Don't mix up with `=pylon`. That's `=pylon` for cable towers. Add eg `disused=yes` + `historic=yes`. Don't use https://taginfo.openstreetmap.org/tags/historic:bridge:support=pier since `historic:*=` is unclear. If it's designated with any status, add the appropriate `heritage=` + `protection_title=`.

What's "foundation"? It's a structure. Keep using `bridge:support=` for `=pier` or whatever it is. Don't mix up with `=pylon`. That's for cable towers. Add eg `disused=yes` + `historic=yes`. Don't use https://taginfo.openstreetmap.org/tags/historic:bridge:support=pier since `historic:*=` is bad. unclear. If it's designated with any status, add the appropriate `heritage=` + `protection_title=`.

What's "foundation"? It's a structure. Keep using `bridge:support=` for `=pier` or whatever it is. Don't mix up with `=pylon`. That's for cable towers. Add eg `disused=yes` + `historic=yes`. Don't use https://taginfo.openstreetmap.org/tags/historic:bridge:support=pier since `historic:*=` is bad. If it's designated with any status, add the appropriate `heritage=` + `protection_title=`.