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 |
|---|---|---|---|---|---|
| Little River Canal (C-7) | Florida | Scour Critical — Countermeasures Installed | Fair | 1964 | 25,364 |
| AIRES CANAL | Florida | Scour Critical — Countermeasures Installed | Good | 1999 | 25,000 |
| GOODBYS LAKE | Florida | Scour Critical — Countermeasures Installed | Fair | 1967 | 23,750 |
| Bay Harbor Waterway | Florida | Scour Critical — Countermeasures Installed | Poor | 1958 | 23,500 |
| Indian creek | Florida | Scour Critical — Countermeasures Installed | Poor | 1963 | 23,500 |
| Reed Canal | Florida | Scour Critical — Countermeasures Installed | Fair | 1931 | 23,000 |
| Dania Cut-Off Canal | Florida | Scour Critical — Countermeasures Installed | Fair | 1984 | 23,000 |
| NEW RIVER & NEW RVR DRS | Florida | Scour Critical — Countermeasures Installed | Fair | 1960 | 22,500 |
| ANCLOTE RIVER | Florida | Scour Critical — Countermeasures Installed | Fair | 1972 | 22,000 |
| Intracoastal Waterway | Florida | Scour Critical — Countermeasures Installed | Fair | 1979 | 22,000 |
| CURLEW CREEK | Florida | Scour Critical — Countermeasures Installed | Good | 1986 | 21,500 |
| Intracoastal Waterway | Florida | Scour Critical — Countermeasures Installed | Fair | 1956 | 21,500 |
| Canal C-103 | Florida | Scour Critical — Countermeasures Installed | Good | 1966 | 20,850 |
| New River & New River Dr | Florida | Scour Critical — Countermeasures Installed | Good | 1981 | 20,500 |
| St. Cloud Canal C-31 | Florida | Scour Critical — Countermeasures Installed | Fair | 1957 | 19,300 |
| BOWLEES CREEK | Florida | Scour Critical — Countermeasures Installed | Good | 1989 | 19,100 |
| Canal 100-A | Florida | Scour Critical — Countermeasures Installed | Poor | 1966 | 18,758 |
| Sweetwater Branch | Florida | Scour Critical — Countermeasures Installed | Good | 1962 | 18,500 |
| Intracoastal Waterway | Florida | Scour Critical — Countermeasures Installed | Fair | 1967 | 17,900 |
| CANAL MAIN B | Florida | Scour Critical — Countermeasures Installed | Good | 1988 | 17,800 |
| BRANCH CANAL BAYOU | Florida | Scour Critical — Countermeasures Installed | Good | 1988 | 17,800 |
| MYAKKA RIVER | Florida | Scour Critical — Countermeasures Installed | Fair | 1977 | 17,750 |
| MYAKKA RIVER | Florida | Scour Critical — Countermeasures Installed | Good | 1977 | 17,750 |
| SALT CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1977 | 17,750 |
| SALT CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1977 | 17,750 |
| NEW RIVER AND 5TH AVE | Florida | Scour Critical — Countermeasures Installed | Fair | 1964 | 17,600 |
| Biscayne Canal C-8 | Florida | Scour Critical — Countermeasures Installed | Fair | 1964 | 17,200 |
| ORTEGA RIVER | Florida | Scour Critical — Countermeasures Installed | Fair | 1952 | 17,100 |
| West Brook Canal | Florida | Scour Critical — Countermeasures Installed | Good | 1960 | 17,000 |
| SOUTH CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1928 | 17,000 |
| SARASOTA BAY | Florida | Scour Critical — Countermeasures Installed | Fair | 1972 | 16,800 |
| CEDAR RIVER | Florida | Scour Critical — Countermeasures Installed | Good | 1975 | 16,600 |
| MOORING BAY | Florida | Scour Critical — Countermeasures Installed | Good | 1957 | 16,500 |
| PHILLIPPI CREEK | Florida | Scour Critical — Countermeasures Installed | Good | 1976 | 16,200 |
| BOOKER CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1921 | 16,000 |
| Intracoastal Waterway | Florida | Scour Critical — Countermeasures Installed | Fair | 1952 | 16,000 |
| INTRACOASTAL WATERWAY | Florida | Scour Critical — Countermeasures Installed | Fair | 1981 | 15,400 |
| Tamiami Canal C-4 | Florida | Scour Critical — Countermeasures Installed | Good | 1965 | 15,350 |
| INTRACOASTAL WATERWAY | Florida | Scour Critical — Countermeasures Installed | Good | 1987 | 15,000 |
| TURNERS CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1963 | 15,000 |
| ICWW at Navarre | Florida | Scour Critical — Countermeasures Installed | Fair | 1960 | 14,500 |
| DORCHESTER WATERWAY | Florida | Scour Critical — Countermeasures Installed | Good | 1992 | 14,400 |
| STRAWBERRY CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1969 | 14,400 |
| NORTH ARCHIE CREEK | Florida | Scour Critical — Countermeasures Installed | Good | 1997 | 14,200 |
| ST. JOSEPH SOUND | Florida | Scour Critical — Countermeasures Installed | Fair | 1963 | 14,200 |
| OLDFIELD CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1957 | 14,000 |
| JOES CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1981 | 13,900 |
| INTRACOASTAL WATERWAY | Florida | Scour Critical — Countermeasures Installed | Good | 1939 | 13,888 |
| ST. JOHNS RIVER | Florida | Scour Critical — Countermeasures Installed | Fair | 1941 | 13,800 |
| N FORK BLACK CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1948 | 13,500 |
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.