See figure 2-8 in TM 5-600/AFJPAM 32-1088
This bridge matches the illustration of the T 6 aluminum bridge.
According to an army.mil article, the bridge weighed 90,000 pounds and removing and dismantling it after the flood destroyed it was "good training"
Army.mil story about the removal:
For what it's worth, it appears to me to be a portable version of the regular Warren truss--each panel is individual, but they are all pinned together at the top and the bottom, rendering them essentially "rigid" and allowing all of the individual top chords to act as one when assembled, and the same with the individual bottom chords. Each panel has end posts, but when connected in succession, they would likely act the same as the verticals in a Warren truss with verticals. I may be way out in left field with this, but just my observation.
I've gotten information from the engineering historian at Leonard Wood. It's not a Bailey and no one seems to recall what it is. It was suggested that it was an experimental type but I haven't found any information yet to confirm the information.
If nothing else turns up I'll post what I have when I get time.
This bridge does not follow the Army Manual for Bailey trusses. Panel design is completely different. It is quite interesting and very unusual, but I would not call it a Bailey, at least using even a slightly strict definition.
Maybe there is more than one type of Bailey. But this is not a typical Bailey because the diagonals don't form a "diamond". Each panel's diagonals usually form a square with positioned with the point down.
But I have never installed one, so if DBG is sure it's really a Bailey, I'll just have to change my definition!
This is a Bailey bridge or panel bridge. I trained at Ft. Leonard Wood in 1969 as a combat engineer, MOS 12B. We assembled and tore down these portable, prefabricated steel bridges in training (this may even be the same bridge). They were (are?) carried to the point of assembly and assembled by an Engineer bridge company.
I'm surprised to see one still standing.
We also did night amphibious assaults across the Big Piney.
You can buy one for $1000/ton at: