Converted to an artificial reef

Flagler Memorial Bridge (Old) (Palm Beach County, Florida)
Built 1938 ; 2016
Deckplate girder bascule bridge over Intracoastal Waterway on FL A1A in Palm Beach
Replaced by a new bridge

Hathaway Bridge (Bay County, Florida)
Built in 1945 ; replaced by the 1960 St. Andrews Bay Bridge
Lost Through truss bridge over St. Andrews Bay on US 98 a truss span was moved and Submerged in the Gulf Used as an Artifical Reef at N 30 02.676 W 085 43.752
Replaced by new bridge and at least 1 span section was moved and submerged into the Gulf as an Artifical Reef

Old East Bay Bridge (Bay County, Florida)
All spans removed 2008
Parker through truss bridge over East Bay on Oakshore Drive (old alignment of US 98)
Open to SCUBA divers (several of the trusses were relocated and sunk in the Gulf right off Panama City's coastline for use as a man made reef.)

Overseas Highway - Seven Mile Bridge (Monroe County, Florida)
Originally built by the railroad in 1912. Replaced and swing span removed 1982; Part of the bridge now used for fishing.
Concrete Arch and Deck Girder bridge over Moser Channel on Old US 1 with a through truss swing span (removed), now used as a Fishing Pier and observation deck in Marathon

Pine Island Road Bridge (Old) (Lee County, Florida)
Built 1968 replaced with new single leaf bascule
Bascule bridge over Matlacha Pass on Pine Island Road in Cape Coral
Replaced by a new bridge