Bing Maps indicates a Parker pony truss over Kill Creek at this location. My suspicion is this area is part of the old Sunflower Army Ammunition Plant which was built during World War II and continued operations into the late 1980s or early 1990s. It has been targeted as a federal clean-up site, so who knows what could become of the bridge.
I suspect that this is probably a newer truss bridge (mid 20th Century), but I am pretty certain that it is not a MOB.
This one is a bit of a journey to get to - seems like any specific place you choose to park, it is still a hike through the woods or along lengthy nature trails to get to the barbed-wire fence that is adjacent to the bridge itself which is on some sort of controlled property - I know K-State has an extension in this part of the property which can be visited during the weekdays, I believe otherwise just get on your maps and follow course to dropped pin....pony is relatively not that old looks like - mid-century perhaps, no plaque found