Old wood found under a bridge

[screlichunter]

I am curious wat this was used for and how old it is... It has a wooden peg in it so I'm guessing it coukd be civil war, maybe later... any help will be appreciated... this was found near a Civil War camp...

 

[rbasin]

Endocrinologist is your best bet. But imagine that could be a bit pricey.

Beat bet maybe from an older bridge. Maybe a hand railing