Thank you, Clark! :)
I found the 1908 topo and the given name is the Feederdam (one word) Bridge.
http://www.lib.utexas.edu/maps/topo/indiana/txu-pclmaps-topo-in-clay_city-1908.jpg
The railroad downstream shows as the Evansville and Indianapolis RR.
About 1/2 mile to a mile downstream from this bridge, there used to be a train tressle which was demolished in the 90s, but I remember walking across it as a kid. My dad used to shoot it with guns, too. LOL. I can't find any record of it on this site. You can still see the concrete from it in aerial photos of the river, but the deck of the tressle is gone. Does anyone know what this was called?
Either that or ADT now includes reports of ghosts on bridges...oh wait, that would push some abandoned truss bridges to ADT counts of over 1,000 per hour, especially between the hours of 10PM and 3AM...
Robert now nominates Anna for the comment of the week award...
Amusing huh Anna?
I have seen ADT's on many long abandoned ones like this...not sure where they come from though. Just helps fuel my belief that the counts on active spans are not accurate and are likely pulled out of someones A#$...
Where did you get the figure for the average daily traffic of 111? LOL! Is this foot traffic? I spent many a summer in my childhood around that bridge and it's been closed all my life...I went fishing off the bridge about 12 years ago and even then there were holes in the deck where you could see the river. Four years ago the holes had increased in size...WHO is using this bridge? LOL!!!