I tried to reach this bridge last week. TR 1004 is a rather fanciful name for the goat path that I encountered, but it was far from the worst I was on that day. I was less than a mile from the bridge site, tooling my Hyundai down the (barely) one lane trail, when I found my way blocked by a fallen tree. No way past it and no way to turn around, so I backed up the half mile or so to the wide spot in the path where I could turn around. Sorry, I planned to have some pics to show, but based on what I saw, I'll leave it to someone with a better equipped vehicle.
The Ohio BMS Says it is Route T1004, so I would say the TR-1004 is correct, and the 2004 was an error.
So what is it--TR2004 or TR1004? I'm guessing that TR1004 is correct, since a street search of the area on Google Earth finds it, but cannot find TR2004. I also noticed the Pratt truss bridge, but didn't dig too deeply, since the road name didn't match...
For a bit I thought that this bridge actually was someplace else on the river and added a street view. Unfortunately that was a Warren pony not a Pratt. That got me thinking. Alas I seem to not be able to delete the street view. This site needs an overhaul. But I think I found an error and perhaps a lost bridge might not be so? Refer to
http://bridgehunter.com/oh/monroe/5632668/
and
http://bridgehunter.com/oh/monroe/5632706/
are they not in same place map speaking?
The pony truss may exist upstream but maybe not the deck. Street view at one point confirms the view I mistakenly added here. Ta ta.
Are my eyes playing tricks on me here?......A Pratt through truss listed in the NBI as "Not deficient"??
The satellite view definitely shows a truss bridge extant at the time the imagery was taken.
I reimported the NBI coordinates and in doing so I think I fixed the map error. Oddly however, I cannot find this bridge listed in the Ohio Historic Bridge Inventory. But the Ohio BMS system reports that this is a Pratt through truss with wooden deck.
My best guess is somewhere near Marietta or Beverly, OH
There may be a TR2004 Bridge in Monroe county, but it sure isn't near US23. US23 runs from Portsmouth in south central Ohio into Michigan near Toledo. Your map is of an area over 100 miles west of Monroe county.
Public-domain photo at https://commons.wikimedia.org/wiki/File:Little_Muskingum_Riv...