Your history is a little off on this one. The bridge you have history for is the College St. Bridge in Bowling Green. This one was damaged by a derailment in 1921 and replaced shortly after that. I could not find any info on the original build date but the L&N came through BG before the Civil War.
Look who's getting all shielded, safety tied and scaffolded to get itself a spankin' new paint job.