maybe it is kind of an overkill to add support for a new tag for two bridges in the whole world (I did not manage to find information of any other, I don’t know, maybe I’m wrong here).
Not all tags are documented on the Wiki. Some are just used and if more people use them then there will eventually be a wiki page. Taginfo is another place to look for actually used tags.bridge=submersible is used twice so it will probably not be supported by any renderer but thats no problem.
Thank you Theodin, I’ll change the other bridge to
I believe that the two bridge=submersible tags shown in taginfo are the ones I created (each bridge is consisted by two different ways, one for each direction, seperated by a footpath.)
It might also be worth considering bridge:movable=submersible. The bridge:movable key is part of the approved proposal “Bridge types”. Although “submersible” is not one of the values listed there, it would be a good fit for a key that describes the mechanism of moving the bridge, imo.