Scour Critical Bridges in Mississippi
301 bridges in Mississippi 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 301 bridges in Mississippi have been identified as vulnerable to scour damage.
| Bridge | State | Scour Status | Condition | Year Built | ADT |
|---|---|---|---|---|---|
| ROBBINS BRANCH | Mississippi | Scour Critical — Unaddressed | Fair | 1960 | 3,500 |
| BELLEFONTAINE CREEK | Mississippi | Scour Critical — Unaddressed | Fair | 1984 | 630 |
| BUCATUNNA RELIEF | Mississippi | Scour Critical — Unaddressed | Poor | 1981 | 410 |
| UNNAMED STREAM | Mississippi | Scour Critical — Unaddressed | Fair | 1937 | 270 |
| CRAPE CREEK | Mississippi | Scour Critical — Unaddressed | Poor | 1972 | 170 |
| TIBBY CREEK | Mississippi | Scour Critical — Unaddressed | Poor | 1966 | 140 |
| PEARL RIVER | Mississippi | Scour Critical — Countermeasures Ineffective | Fair | 1965 | 21,500 |
| PEARL RIVER | Mississippi | Scour Critical — Countermeasures Ineffective | Fair | 1965 | 21,500 |
| DITCH | Mississippi | Scour Critical — Countermeasures Ineffective | Fair | 1970 | 15,000 |
| RELIEF FOR CANAL | Mississippi | Scour Critical — Countermeasures Ineffective | Fair | 1976 | 10,000 |
| UNNAMED CREEK NO 1 | Mississippi | Scour Critical — Countermeasures Ineffective | Good | 2005 | 2,200 |
| BIG BLACK RIVER | Mississippi | Scour Critical — Countermeasures Ineffective | Fair | 1939 | 930 |
| TECHEVA CREEK | Mississippi | Scour Critical — Countermeasures Ineffective | Fair | 1985 | 660 |
| BOUGE HASTY | Mississippi | Scour Critical — Countermeasures Ineffective | Fair | 1960 | 630 |
| TUSCOLAMETA CANAL SOUTH | Mississippi | Scour Critical — Countermeasures Ineffective | Good | 1986 | 460 |
| PLUMMER SLOUGH | Mississippi | Scour Critical — Countermeasures Installed | Poor | 1981 | 20,000 |
| TOWN CR | Mississippi | Scour Critical — Countermeasures Installed | Fair | 1962 | 18,000 |
| TOOMSUBA CK CHANNEL | Mississippi | Scour Critical — Countermeasures Installed | Fair | 1960 | 13,000 |
| BLACK CREEK | Mississippi | Scour Critical — Countermeasures Installed | Fair | 1961 | 9,500 |
| BLACK CREEK | Mississippi | Scour Critical — Countermeasures Installed | Fair | 1961 | 9,500 |
| TANGIPAHOA RIVER | Mississippi | Scour Critical — Countermeasures Installed | Fair | 1960 | 9,000 |
| TANGIPAHOA RIVER | Mississippi | Scour Critical — Countermeasures Installed | Fair | 1960 | 9,000 |
| PEARL RIVER | Mississippi | Scour Critical — Countermeasures Installed | Fair | 1967 | 8,500 |
| LITTLE BLACK CREEK | Mississippi | Scour Critical — Countermeasures Installed | Good | 1961 | 8,000 |
| LITTLE BLACK CREEK | Mississippi | Scour Critical — Countermeasures Installed | Good | 1961 | 8,000 |
| RICHLAND CREEK | Mississippi | Scour Critical — Countermeasures Installed | Poor | 1939 | 5,600 |
| MOUNGERS CREEK | Mississippi | Scour Critical — Countermeasures Installed | Good | 1994 | 5,200 |
| SANDY CREEK | Mississippi | Scour Critical — Countermeasures Installed | Poor | 1983 | 4,400 |
| WOLF RIVER | Mississippi | Scour Critical — Countermeasures Installed | Fair | 1996 | 3,900 |
| COONEWAH CREEK | Mississippi | Scour Critical — Countermeasures Installed | Poor | 1958 | 3,900 |
| TCHOUTACABOUFFA RIVER | Mississippi | Scour Critical — Countermeasures Installed | Fair | 1998 | 3,500 |
| BOGUEFALA CREEK | Mississippi | Scour Critical — Countermeasures Installed | Fair | 1948 | 3,400 |
| BRUSHY CREEK | Mississippi | Scour Critical — Countermeasures Installed | Fair | 1958 | 3,300 |
| ST CATHERINE CREEK | Mississippi | Scour Critical — Countermeasures Installed | Good | 1998 | 3,100 |
| CAMP CREEK CANAL | Mississippi | Scour Critical — Countermeasures Installed | Good | 1992 | 2,900 |
| LEAF RIVER RELIEF | Mississippi | Scour Critical — Countermeasures Installed | Fair | 1967 | 2,840 |
| CHICKASAWHAY RIVER | Mississippi | Scour Critical — Countermeasures Installed | Fair | 2003 | 2,100 |
| DITCH | Mississippi | Scour Critical — Countermeasures Installed | Good | 2004 | 2,100 |
| MCDONALD CREEK | Mississippi | Scour Critical — Countermeasures Installed | Fair | 2001 | 2,000 |
| JOHNSON CREEK | Mississippi | Scour Critical — Countermeasures Installed | Fair | 2001 | 1,900 |
| CHUNKY CREEK | Mississippi | Scour Critical — Countermeasures Installed | Fair | 1979 | 1,800 |
| CATALPA CREEK | Mississippi | Scour Critical — Countermeasures Installed | Good | 1986 | 1,700 |
| HORSE HUNTER CREEK | Mississippi | Scour Critical — Countermeasures Installed | Fair | 1962 | 1,600 |
| CREEK | Mississippi | Scour Critical — Countermeasures Installed | Poor | 1940 | 1,600 |
| BIG REEDY CREEK | Mississippi | Scour Critical — Countermeasures Installed | Fair | 1961 | 1,500 |
| LUXAPALILA RIVER | Mississippi | Scour Critical — Countermeasures Installed | Poor | 1981 | 1,500 |
| LOCAL DRAINAGE GREN.DAM | Mississippi | Scour Critical — Countermeasures Installed | Poor | 1961 | 1,400 |
| PLUM CREEK | Mississippi | Scour Critical — Countermeasures Installed | Fair | 1966 | 1,400 |
| MCGEE CREEK | Mississippi | Scour Critical — Countermeasures Installed | Good | 1972 | 1,300 |
| MANTACHIE CREEK | Mississippi | Scour Critical — Countermeasures Installed | Good | 1965 | 1,300 |
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.