Dat be it.
Don't know what keeps it standing. Really deteriorated alot in the 25 years I've been going past it.
Any idea how long since it's been used Tim?
Was that a swing bridge?
It has a geared sprocket at the base of the center span, but the ends don't have any kind of skid plates for alignment, curved ends or look like the are separated for movement.
Height and design says no, but never under stood the sprocket.