| Name | Location | Status | Design | Year Built | Year Lost | Span Length (ft.) | Total Length (ft.) |
|---|---|---|---|---|---|---|---|
| Seaboard Air Line Railway St. Mary's River Bridge | First Coast Railroad over St. Mary's River | Open to traffic | Deck plate girder | 1926 | -- | -- | -- |
| St. Mary's River Bridge | US 17 over St. Mary's River | Open to all traffic. | Other | 1927 | -- | 101.1 | 562.7 |