The 1992 NBI lists a truss. 1996 NBI shows the current crossing built 1994. The county maps are ambiguous, early ones showing the E/W road going straight west while the later ones show the jog to the north before the intersection with the current Buffalo Road. None show a bridge other the one on Buffalo Road which is marked on the 2008 map as a low water crossing.
I am about 95 percent sure that this bridge is lost. There is now a low water crossing where I think that the bridge would have been. But, there appears to be an old road alignment that disappears into the trees nearby. Thus, there is a slight possibility that the bridge may be hiding in the trees.
That was my suspicion. I had not had a chance to investigate further. Thanks for checking.