TIL the state of Indiana (and presumably others as well) makes obsolete bridges available for restoration or relocation.
Inventory here: https://www.in.gov/indot/2532.htm
This one seems reasonable enough. Nice patina, ran when parked: https://www.in.gov/indot/2563.htm
Heck, if you want, just send the money to me. If this guy can sell the Taj Majal three times over, surely I can sell a historic bridge.