I'll have to confess, when I first looked at the marker on the satellite view I couldn't find anything, other than a black mark that spanned about half of the Obion Creek. When I zoomed in I still couldn't see a bridge. I could see only a fallen tree. Then, alas, I panned south and there it was! I've lived in this area all my life and, in fact, I passed by the other truss bridge over the Obion just last week, but until I found this site I wasn't even aware of the Griffin Road bridge. Thanks for the enlightening moment.
Rather amusing that Google Maps still shows the outline of the road...which obviously hasn't existed for a very long time!
Have yet to find any information on this bridge, But the bridge looks to be unreachable due to swampland surrounding the bridge.