Have you brought the issue to the attention of the DWG? Perhaps you have not, given your past complaint that the DWG is treating you unfairly. Three years is an awfully long time to wait.
Have you commented on the problem changeset? For example this changeset from your linked description is where the bridge was removed, yet there are no comments on it. I would expect you to say something like “hey there, you removed this bridge, however, I believe it is still there because <reasons>.”
Step 1: Comment on the offending changeset
Step 2: Have discussion with the mapper about the edit in question
Step 3: If still not resolved, then contact DWG
Has been done for the changes that you feel are wrong?
I’m standing by with my bowl of 
and some long-form prose since I still cannot react with a simple emoji.