The LEGO arrived! My first ever designed LEGO build and it worked :)

Also I was right about those top beams, weird off-by-one error while putting it together, but it works perfectly. The whole thing it light and yet sturdy. And trains pass under and on it.

Shot of the LEGO bridge.
Shot of the LEGO bridge.
Train riding on the bridge.

Previous photo looks slightly different, found small piece that I though was missing and made the top beams more perfect.