The bridge that keeps sighing in my sleep

I keep having this dream where I'm walking a bridge I've inspected a hundred times, but the deck has gone soft under my feet—not collapsing, just yielding. Like it's breathing. I kneel to check the expansion joints and they're full of moss that whispers my name. I wake up with the sense that something is listening back, and I'm not sure if that's peace or the beginning of a much longer tiredness.