The only thing that bothers me with the bridge is that if you study the lines, and where things should connect, it forms a bit of an optical illusion.
Attached is more of an example of what I mean-
The rail and the lower support beams are parallel, right? Well, for that to be true, the posts in the rail going through the floorboards should connect at exactly the same spot on the lower support beam. This however isn't the case, since they end up being wider than the lower support :p If you were to look at it front on, this is how it would look-
_ <rail top
__\ <floor base
_ \ <lower support
^doesn't connect.