Visited and photographed this bridge and the adjacent railroad bridge today. The new bridge is still under construction (the rebar was rolled up nearby and it looked like the footings were in place, but there was no deck at all yet), so this one will be in use, I suspect, at least until spring 2016.
Good news! This historic truss bridge is to be preserved for pedestrians following its replacement on new alignment! http://www.muskogeephoenix.com/news/local_news/spring-start-...
Stopped by today; the new bridge is completed and the old bridge is, indeed, open to pedestrian traffic.