Scour Critical Bridges in South Carolina

1,263 bridges in South Carolina 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 1,263 bridges in South Carolina have been identified as vulnerable to scour damage.

Clear

Bridge	State	Scour Status	Condition	Year Built	ADT
BLACK SWAMP (NO. 3)	South Carolina	Scour Critical — Countermeasures Installed	Fair	1968	16,300
NICHOLAS CREEK	South Carolina	Scour Critical — Countermeasures Installed	Good	1994	16,100
LYNCHES LAKE	South Carolina	Scour Critical — Countermeasures Installed	Fair	1928	15,900
WACCAMAW RIVER	South Carolina	Scour Critical — Countermeasures Installed	Fair	1986	14,750
WACCAMAW RIVER	South Carolina	Scour Critical — Countermeasures Installed	Fair	1986	14,750
BRUSHY CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1969	14,500
NEWMAN SWAMP	South Carolina	Scour Critical — Countermeasures Installed	Fair	1973	14,300
NEWMAN SWAMP	South Carolina	Scour Critical — Countermeasures Installed	Fair	1973	14,300
WILDCAT CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1968	13,500
TURKEY CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	2005	13,100
WAXHAW CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1973	12,850
CANE CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1974	12,850
BIG DUTCHMAN CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1979	12,800
DUNCAN CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1960	12,750
DUNCAN CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1960	12,750
LAWSON FORK CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1962	12,400
GEORGES CREEK	South Carolina	Scour Critical — Countermeasures Installed	Poor	1948	12,200
SHAWS CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1954	12,200
IRELAND CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1938	11,500
GILLS CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1941	11,300
SAVANNAH RIVER	South Carolina	Scour Critical — Countermeasures Installed	Fair	1968	11,300
WACCAMAW RIVER	South Carolina	Scour Critical — Countermeasures Installed	Good	2000	11,150
WACCAMAW RIVER	South Carolina	Scour Critical — Countermeasures Installed	Good	2000	11,150
SIX MILE CREEK	South Carolina	Scour Critical — Countermeasures Installed	Good	1986	11,000
PETERS CREEK	South Carolina	Scour Critical — Countermeasures Installed	Poor	1963	11,000
KINGSTON LAKE	South Carolina	Scour Critical — Countermeasures Installed	Fair	1962	10,900
HEMBREE CREEK	South Carolina	Scour Critical — Countermeasures Installed	Good	1988	10,500
GRAZE CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1989	10,300
CROWDERS CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1957	10,200
CRANE CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1922	10,100
LITTLE PEE DEE SWP-2	South Carolina	Scour Critical — Countermeasures Installed	Fair	1974	9,950
LITTLE PEE DEE SWP-4	South Carolina	Scour Critical — Countermeasures Installed	Poor	1974	9,950
LITTLE PEE DEE SWP-1	South Carolina	Scour Critical — Countermeasures Installed	Fair	1931	9,950
LITTLE PEE DEE SWP-2	South Carolina	Scour Critical — Countermeasures Installed	Fair	1931	9,950
LITTLE PEE DEE SWP-4	South Carolina	Scour Critical — Countermeasures Installed	Fair	1931	9,950
LITTLE PEE DEE SWP-5	South Carolina	Scour Critical — Countermeasures Installed	Fair	1931	9,950
LITTLE PEE DEE SWP-5	South Carolina	Scour Critical — Countermeasures Installed	Fair	1974	9,950
LITTLE PEE DEE SWP-1	South Carolina	Scour Critical — Countermeasures Installed	Good	1974	9,950
CLEMS BRANCH	South Carolina	Scour Critical — Countermeasures Installed	Fair	1974	9,900
BACK SWAMP	South Carolina	Scour Critical — Countermeasures Installed	Fair	1931	9,700
BACK SWAMP	South Carolina	Scour Critical — Countermeasures Installed	Fair	1974	9,700
WADBOO SWAMP	South Carolina	Scour Critical — Countermeasures Installed	Fair	1973	9,300
THOMPSON CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1931	8,800
TRIB TO MOUNTAIN CK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1976	8,700
TRIB TO MOUNTAIN CRK	South Carolina	Scour Critical — Countermeasures Installed	Good	1976	8,700
JACKSON BRANCH	South Carolina	Scour Critical — Countermeasures Installed	Fair	1982	8,700
MOUNTAIN CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1976	8,700
TRIB TO MOUNTAIN CK	South Carolina	Scour Critical — Countermeasures Installed	Good	1976	8,700
BEAR CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1970	7,900
SOUTH TYGER RIVER	South Carolina	Scour Critical — Countermeasures Installed	Poor	1940	7,400

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.

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