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 |
|---|---|---|---|---|---|
| Canal C-100-A | Florida | Scour Critical — Countermeasures Installed | Fair | 1966 | 7,400 |
| Intracoastal Waterway | Florida | Scour Critical — Countermeasures Installed | Fair | 1949 | 7,300 |
| TRIBUTARY TO TROUT RIVER | Florida | Scour Critical — Countermeasures Installed | Good | 1986 | 7,300 |
| HIGHLANDS CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1986 | 7,300 |
| BULL CREEK | Florida | Scour Critical — Countermeasures Installed | Good | 1969 | 7,200 |
| WEEKI WACHEE RIVER | Florida | Scour Critical — Countermeasures Installed | Good | 1985 | 7,100 |
| Intracoastal Waterway | Florida | Scour Critical — Countermeasures Installed | Poor | 1963 | 7,100 |
| MILES PINE CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1983 | 6,950 |
| Snake Creek Canal C-9 | Florida | Scour Critical — Countermeasures Installed | Good | 1962 | 6,916 |
| ST.JOHNS RIVER-W.CHANNEL | Florida | Scour Critical — Countermeasures Installed | Fair | 1974 | 6,900 |
| Escambia River | Florida | Scour Critical — Countermeasures Installed | Fair | 1957 | 6,900 |
| BONITA CREEK | Florida | Scour Critical — Countermeasures Installed | Good | 1983 | 6,800 |
| ZANZABAR CANAL | Florida | Scour Critical — Countermeasures Installed | Fair | 1974 | 6,720 |
| ZANZABAR CANAL | Florida | Scour Critical — Countermeasures Installed | Fair | 1974 | 6,720 |
| BROOKER CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1984 | 6,649 |
| N FORK NEW RIVER | Florida | Scour Critical — Countermeasures Installed | Fair | 1925 | 6,618 |
| CEDAR CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1947 | 6,600 |
| MID-PRONG ST MARYS RIVER | Florida | Scour Critical — Countermeasures Installed | Fair | 1948 | 6,600 |
| SHELL HARBOR CANAL | Florida | Scour Critical — Countermeasures Installed | Fair | 1969 | 6,470 |
| WHITAKER CREEK | Florida | Scour Critical — Countermeasures Installed | Good | 1959 | 6,400 |
| Canal C-103 Mowry | Florida | Scour Critical — Countermeasures Installed | Fair | 1966 | 6,320 |
| CRETE CANAL | Florida | Scour Critical — Countermeasures Installed | Good | 1975 | 6,300 |
| CANEY BRANCH | Florida | Scour Critical — Countermeasures Installed | Fair | 1966 | 6,200 |
| PEACE RIVER | Florida | Scour Critical — Countermeasures Installed | Good | 1956 | 6,100 |
| PEACE RIVER OVERFLOW | Florida | Scour Critical — Countermeasures Installed | Fair | 1956 | 6,100 |
| ROSE CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1932 | 6,100 |
| CLAY HOLE CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1932 | 6,100 |
| WARES CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1963 | 6,000 |
| JOES CREEK | Florida | Scour Critical — Countermeasures Installed | Good | 1981 | 6,000 |
| SUWANNEE RIVER | Florida | Scour Critical — Countermeasures Installed | Fair | 1989 | 5,900 |
| SUWANNEE RIVER | Florida | Scour Critical — Countermeasures Installed | Good | 1971 | 5,800 |
| Groover Creek | Florida | Scour Critical — Countermeasures Installed | Fair | 1975 | 5,700 |
| CANAL L | Florida | Scour Critical — Countermeasures Installed | Good | 1982 | 5,600 |
| SALMON CANAL | Florida | Scour Critical — Countermeasures Installed | Fair | 1968 | 5,600 |
| DOCTOR PASS INLET | Florida | Scour Critical — Countermeasures Installed | Good | 1975 | 5,400 |
| SUWANNEE RIVER RELIEF | Florida | Scour Critical — Countermeasures Installed | Fair | 1947 | 5,200 |
| INTRACOASTAL WATERWAY | Florida | Scour Critical — Countermeasures Installed | Fair | 1964 | 5,100 |
| MILE BRANCH | Florida | Scour Critical — Countermeasures Installed | Good | 1965 | 5,000 |
| SUWANNEE RIVER RELIEF | Florida | Scour Critical — Countermeasures Installed | Fair | 1947 | 4,900 |
| FENHOLLOWAY RIVER | Florida | Scour Critical — Countermeasures Installed | Fair | 1934 | 4,750 |
| NORTH SPRING LAKE | Florida | Scour Critical — Countermeasures Installed | Fair | 1985 | 4,700 |
| ST. MARYS RIVER | Florida | Scour Critical — Countermeasures Installed | Fair | 1927 | 4,600 |
| TURKEY CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1966 | 4,500 |
| Little River | Florida | Scour Critical — Countermeasures Installed | Poor | 1959 | 4,500 |
| FISHEATING CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1979 | 4,409 |
| McKAY CREEK | Florida | Scour Critical — Countermeasures Installed | Good | 1995 | 4,400 |
| CURRY CREEK | Florida | Scour Critical — Countermeasures Installed | Good | 1991 | 4,400 |
| OLUSTEE CREEK | Florida | Scour Critical — Countermeasures Installed | Fair | 1968 | 4,400 |
| BIMINI CANAL | Florida | Scour Critical — Countermeasures Installed | Good | 1960 | 4,200 |
| ALAPAHA RIVER OVERFLOW | Florida | Scour Critical — Countermeasures Installed | Fair | 1922 | 4,200 |
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.