Scour Critical Bridges in Florida
357 bridges in Florida at risk from water erosion around foundations.
Scour Critical Bridges
Scour is the erosion of soil and rock around a bridge's foundation caused by moving water. When foundations are exposed or undermined, a bridge can collapse even if its deck and superstructure are in good condition. Scour is the leading cause of bridge failures in the US. These 357 bridges in Florida have been identified as vulnerable to scour damage.
| Bridge | State | Scour Status | Condition | Year Built | ADT |
|---|---|---|---|---|---|
| Toms Harbor Channel | Florida | Scour Critical — Countermeasures Installed | Fair | 1967 | 1,700 |
| RAILROAD AND MCCOY CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1988 | 1,700 |
| ORANGE STATE CANAL | Florida | Scour Critical — Countermeasures Installed | Fair | 1967 | 1,660 |
| NORTH RELIEF CANAL | Florida | Scour Critical — Countermeasures Installed | Fair | 1948 | 1,650 |
| FAKA UNION CANAL | Florida | Scour Critical — Countermeasures Installed | Fair | 1969 | 1,600 |
| FAHKA UNION CANAL | Florida | Scour Critical — Countermeasures Installed | Fair | 1969 | 1,600 |
| PINE KEY CUTOFF | Florida | Scour Critical — Countermeasures Installed | Fair | 1957 | 1,600 |
| WATER OAK CREEK | Florida | Scour Critical — Countermeasures Installed | Poor | 1950 | 1,600 |
| SWIFT CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1927 | 1,600 |
| INTRACOASTAL WATERWAY | Florida | Scour Critical — Countermeasures Installed | Fair | 1963 | 1,500 |
| BRAGGS BRANCH | Florida | Scour Critical — Countermeasures Installed | Fair | 1940 | 1,500 |
| LESLIE HEIFNER CANAL | Florida | Scour Critical — Countermeasures Installed | Fair | 1965 | 1,430 |
| Dram Branch | Florida | Scour Critical — Countermeasures Installed | Fair | 1976 | 1,400 |
| Levee L-31-E (C-107) | Florida | Scour Critical — Countermeasures Installed | Fair | 1967 | 1,399 |
| BRANCH/PALMA SOLA BAY | Florida | Scour Critical — Countermeasures Installed | Fair | 1962 | 1,387 |
| TRIB. TO GOODBYS CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1970 | 1,351 |
| WARES CREEK | Florida | Scour Critical — Countermeasures Installed | Good | 1926 | 1,333 |
| TAYLOR CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1957 | 1,300 |
| Bogie Channel | Florida | Scour Critical — Countermeasures Installed | Fair | 1967 | 1,300 |
| Holmes Creek | Florida | Scour Critical — Countermeasures Installed | Poor | 1971 | 1,300 |
| WARES CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1949 | 1,240 |
| ALAPAHA RIVER | Florida | Scour Critical — Countermeasures Installed | Good | 1986 | 1,200 |
| BOGGY CREEK | Florida | Scour Critical — Countermeasures Installed | Good | 1984 | 1,100 |
| Indian Creek | Florida | Scour Critical — Countermeasures Installed | Fair | 1930 | 1,040 |
| TRITON CANAL | Florida | Scour Critical — Countermeasures Installed | Fair | 1979 | 1,000 |
| JACKSON CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1974 | 1,000 |
| CAMPS CANAL | Florida | Scour Critical — Countermeasures Installed | Fair | 1955 | 1,000 |
| PALMA SOLA CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1950 | 957 |
| PEACE RIVER | Florida | Scour Critical — Countermeasures Installed | Fair | 1954 | 950 |
| RCI: Little Charlie Crk | Florida | Scour Critical — Countermeasures Installed | Fair | 1962 | 950 |
| TOMS DITCH (SFWMD L-1E) | Florida | Scour Critical — Countermeasures Installed | Fair | 1986 | 900 |
| Flat Creek | Florida | Scour Critical — Countermeasures Installed | Fair | 1947 | 800 |
| SIX MILE CREEK | Florida | Scour Critical — Countermeasures Installed | Good | 1957 | 771 |
| TEN MILE CREEK | Florida | Scour Critical — Countermeasures Installed | Good | 1933 | 750 |
| TYRE CANAL | Florida | Scour Critical — Countermeasures Installed | Fair | 1975 | 663 |
| SANDFLY SWAMP | Florida | Scour Critical — Countermeasures Installed | Fair | 1957 | 650 |
| SMOKEHOUSE BAY | Florida | Scour Critical — Countermeasures Installed | Poor | 1972 | 640 |
| LITTLE PAYNE CREEK | Florida | Scour Critical — Countermeasures Installed | Poor | 1915 | 600 |
| Caloosa Channel | Florida | Scour Critical — Countermeasures Installed | Fair | 1965 | 593 |
| Venice Waterway | Florida | Scour Critical — Countermeasures Installed | Fair | 1967 | 593 |
| Canal C-102 | Florida | Scour Critical — Countermeasures Installed | Good | 1975 | 575 |
| SANTA FE RIVER | Florida | Scour Critical — Countermeasures Installed | Fair | 1962 | 550 |
| GOATS HEAD CANAL | Florida | Scour Critical — Countermeasures Installed | Fair | 1965 | 545 |
| Duck Key Canal | Florida | Scour Critical — Countermeasures Installed | Fair | 1955 | 530 |
| Joes Canal | Florida | Scour Critical — Countermeasures Installed | Fair | 1955 | 517 |
| ATES CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1960 | 515 |
| MULLOCK CREEK | Florida | Scour Critical — Countermeasures Installed | Good | 1965 | 500 |
| Coldwater Creek | Florida | Scour Critical — Countermeasures Installed | Poor | 1964 | 500 |
| Seminole Waterway | Florida | Scour Critical — Countermeasures Installed | Good | 1970 | 500 |
| DRAINAGE CANAL | Florida | Scour Critical — Countermeasures Installed | Good | 1993 | 450 |
Scour Critical Rating Codes
| Code 2 — Unaddressed | Bridge is scour critical with no countermeasures installed. The foundation is vulnerable and no protective action has been taken. |
| Code 3 — Countermeasures Installed | Protective measures (riprap, sheet piling, etc.) have been installed to reduce scour risk, but the bridge remains classified as scour critical. |
| Code 6 — Countermeasures Ineffective | Protective measures were installed but have been assessed as ineffective. The bridge requires re-evaluation and additional action. |
About Scour Critical Bridges
Scour critical bridges have been identified through underwater inspection or analysis as having foundations that are unstable or could become unstable during flood conditions. FHWA requires action plans for all scour critical bridges. Famous scour failures include the 1987 Schoharie Creek Bridge collapse in New York.