Marathon, Florida

Knight Channel Bridge (Monroe County, Florida)
Built 1912; rehabilitated 1938
Girder bridge over Knight Channel on Pigeon Key Access
Closed to all traffic

Old Seven Mile Bridge (Monroe County, Florida)
Originally built by the railroad in 1912. Replaced 1982 with a modern bridge, but most of the original bridge (with a few spans removed for shipping) intact. 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