whilst t1_j13tb7f wrote
Reply to comment by bcsimms04 in When this bridge in Fort Benton, Montana, USA was built 1888 it was required to have a swing span to allow steamboats to navigate. It was considered the furthest navigable point on Earth, more than 2,700 miles from the Gulf of Mexico. by triviafrenzy
I'd love more information on this but it's proving impossible to google. Got a link?
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