Soo... pretty much, I am stuck with this issue.
When I try to edit the bridge.. it becomes faulty. And I can't delete it because its packaged.
So my only 2 options at this moment are just leaving this be, or replacing the bridge with something else. rip xd
I understand what you are saying, although as far as I recall, in earlier Trainz versions this bridge (shown in the pictures I attached) did actually fully extend down.
So that's kind of what confuses me. :p