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
SAVANNAH RIVER	South Carolina	Scour Critical — Countermeasures Installed	Fair	1976	32,050
SAVANNAH RIVER	South Carolina	Scour Critical — Countermeasures Installed	Fair	1976	32,050
GILLS CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1940	29,800
GREAT SWAMP	South Carolina	Scour Critical — Countermeasures Installed	Fair	1966	29,700
GREAT SWAMP	South Carolina	Scour Critical — Countermeasures Installed	Fair	1966	29,700
S. FORK FISHING CK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1979	28,150
CYPRESS SWAMP	South Carolina	Scour Critical — Countermeasures Installed	Fair	1961	27,700
CYPRESS SWAMP	South Carolina	Scour Critical — Countermeasures Installed	Fair	1961	27,700
COW CASTLE CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1961	27,250
COW CASTLE CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1961	27,250
LAUREL CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1954	27,000
INDIAN FIELD SWAMP	South Carolina	Scour Critical — Countermeasures Installed	Fair	1972	25,800
INDIAN FIELD SWAMP	South Carolina	Scour Critical — Countermeasures Installed	Fair	1972	25,800
WACCAMAW RIVER	South Carolina	Scour Critical — Countermeasures Installed	Poor	1966	25,600
BIG WATEREE CK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1979	24,300
BIG WATEREE CK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1979	24,300
JEFFERIES CREEK	South Carolina	Scour Critical — Countermeasures Installed	Poor	1938	24,100
FOUR HOLE SWAMP	South Carolina	Scour Critical — Countermeasures Installed	Fair	1961	23,550
FOUR HOLE SWAMP	South Carolina	Scour Critical — Countermeasures Installed	Fair	1961	23,550
GREAT PEE DEE RIVER	South Carolina	Scour Critical — Countermeasures Installed	Fair	1967	23,150
POCCOSIN SWAMP	South Carolina	Scour Critical — Countermeasures Installed	Fair	1967	23,150
GREAT PEE DEE SWAMP	South Carolina	Scour Critical — Countermeasures Installed	Fair	1966	23,150
POCCOSIN SWAMP	South Carolina	Scour Critical — Countermeasures Installed	Fair	1967	23,150
GR. PEE DEE SWP & F-RD	South Carolina	Scour Critical — Countermeasures Installed	Fair	1966	23,150
GR. PEE DEE SWP & F-RD	South Carolina	Scour Critical — Countermeasures Installed	Fair	1966	23,150
GREAT PEE DEE SWAMP	South Carolina	Scour Critical — Countermeasures Installed	Fair	1966	23,150
GREAT PEE DEE RIVER	South Carolina	Scour Critical — Countermeasures Installed	Poor	1967	23,150
WACCAMAW RIV SCLRR L-123	South Carolina	Scour Critical — Countermeasures Installed	Fair	1937	22,700
JEFFRIES CREEK	South Carolina	Scour Critical — Countermeasures Installed	Good	1977	21,400
INDIAN CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1960	20,850
INDIAN CREEK	South Carolina	Scour Critical — Countermeasures Installed	Poor	1960	20,850
ASHLEY RIVER	South Carolina	Scour Critical — Countermeasures Installed	Poor	1971	19,800
JEFFERIES CREEK	South Carolina	Scour Critical — Countermeasures Installed	Fair	1966	18,750
LAKE SWAMP	South Carolina	Scour Critical — Countermeasures Installed	Fair	1966	18,450
LAKE SWAMP	South Carolina	Scour Critical — Countermeasures Installed	Fair	1966	18,450
SOUTH EDISTO RIVER	South Carolina	Scour Critical — Countermeasures Installed	Fair	1970	18,200
SOUTH EDISTO RIVER	South Carolina	Scour Critical — Countermeasures Installed	Fair	1970	18,200
POCOTALIGO SWAMP (NO. 3)	South Carolina	Scour Critical — Countermeasures Installed	Fair	1967	18,100
POCOTALIGO SWAMP (NO. 3)	South Carolina	Scour Critical — Countermeasures Installed	Fair	1967	18,100
PROVIDENCE SWAMP	South Carolina	Scour Critical — Countermeasures Installed	Fair	1973	17,900
PROVIDENCE SWAMP	South Carolina	Scour Critical — Countermeasures Installed	Fair	1973	17,900
N. EDISTO RIVER	South Carolina	Scour Critical — Countermeasures Installed	Fair	1970	17,800
N. EDISTO RIVER	South Carolina	Scour Critical — Countermeasures Installed	Fair	1970	17,800
LYNCHES RIVER	South Carolina	Scour Critical — Countermeasures Installed	Fair	1967	17,050
LYNCHES RIVER	South Carolina	Scour Critical — Countermeasures Installed	Fair	1967	17,050
BLACK SWAMP (NO. 5)	South Carolina	Scour Critical — Countermeasures Installed	Fair	1968	16,300
BLACK SWAMP (NO. 5)	South Carolina	Scour Critical — Countermeasures Installed	Fair	1968	16,300
BLACK SWAMP (NO. 3)	South Carolina	Scour Critical — Countermeasures Installed	Fair	1968	16,300
BLACK RIVER (NO. 2)	South Carolina	Scour Critical — Countermeasures Installed	Fair	1968	16,300
TEARCOAT BRANCH	South Carolina	Scour Critical — Countermeasures Installed	Fair	1967	16,300

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.

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