Fort Denaud/SSR 78AW Bridgeâ€”crosses the Okeechobee Waterway at Statue Mile 108. at the charted position of Denaud.
The Fort Denaud bridge is open [to water traffic] indefinitely due to the need for emergency repairs. See http://swflorida.blogspot.com/2012/05/fort-denaud-bridge-closed-hendry-county.html for more information.
And this confirmation from Don Browne, owner of the blog mentioned above.
Yes I believe it will be closed [to vehicular traffic] for awhile. There are signs on SR29 indicating the closure and probably SR80 as well.