re: OB Engineers: Steel Beams to Make a Bridge

Bad choice there. Offspec concrete spans will be terrible.

Rail car bridge is likely cheapest metal span one can find.

I priced a bailey bridge, pioneer, and another brand for work at like a 80ft span and it was a pain. They did not like going over the 50-60ft range. The bridge alone was over $100k for cheapest option, that didn’t count the ringer barge crane that set it.

If you can put a few pile groupings in the creek and shorten the spans to like 25 ft you can build entirely out of wood or use your steel beams and put a deck on it. That’s more work than the rail cars.

You will need one hell of a foundation for the railcar, maybe even pile supported foundation to make it last.