The Tennessee State Library and Archives has on file at least four nice imgages from 1941 for this bridge. To view, go to their website
and in the search box, I would suggest
+carthage +bridge (no "" and use space after carthage)
This will also pull up an image of the bridge that predates this bridge.
This bridge is an extremely unusual bridge. It has a design that is similar to the arch cantilever design where a deck truss transitions into a through truss, but this bridge doesn't appear to have a cantilever because the thru truss span has the typical Tennessee hybrid K/Parker truss design.
Elevation views appear to be nearly impossible to get, but here is the best view I could find: http://www.panoramio.com/photo/29972196