Swift’s bridge was built near Swift’s Mill, located just north of where Glenburn Creek runs into the Middle Fork River. Dannell McCallum’s book "Guide to the Big Vermilion River System" describes it as "a typical steel truss bridge" so I guess that will have to do until a photo turns up.
In September of 1964, Laneil Construction Company of Tilton, IL was given the contract to build a concrete replacement bridge. The replacement was originally supposed to be built north of Swift’s bridge, which would allow traffic to still use the road. Plans were changed and the replacement was built in the same location as the truss bridge, though at a different angle. A spokesman for the company said the old bridge would probably be removed in early October, 1964.