Scour Critical Bridges in Minnesota

257 bridges in Minnesota 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 257 bridges in Minnesota have been identified as vulnerable to scour damage.

Clear

Bridge	State	Scour Status	Condition	Year Built	ADT
WHALAN CREEK	Minnesota	Scour Critical — Countermeasures Installed	Fair	1947	65
SKUNK RIVER	Minnesota	Scour Critical — Countermeasures Installed	Fair	1994	64
W FK LAC QUI PARLE RIVER	Minnesota	Scour Critical — Countermeasures Installed	Fair	1965	60
S FK CROW RIVER	Minnesota	Scour Critical — Countermeasures Installed	Fair	1977	60
CLEARWATER RIVER	Minnesota	Scour Critical — Countermeasures Installed	Good	1993	60
STREAM	Minnesota	Scour Critical — Countermeasures Installed	Fair	1949	60
RICEFORD CREEK	Minnesota	Scour Critical — Countermeasures Installed	Fair	1940	60
ROOT RIVER	Minnesota	Scour Critical — Countermeasures Installed	Fair	1960	60
SKUNK RIVER	Minnesota	Scour Critical — Countermeasures Installed	Fair	1978	55
HAWK CREEK	Minnesota	Scour Critical — Countermeasures Installed	Good	1991	55
STREAM	Minnesota	Scour Critical — Countermeasures Installed	Fair	1941	55
PINE ISLAND CREEK	Minnesota	Scour Critical — Countermeasures Installed	Fair	1935	53
W SWAN RIVER	Minnesota	Scour Critical — Countermeasures Installed	Fair	1921	52
S BR ROOT RIVER	Minnesota	Scour Critical — Countermeasures Installed	Fair	1935	51
E FK DES MOINES RIVER	Minnesota	Scour Critical — Countermeasures Installed	Poor	1966	50
CLEARWATER RIVER	Minnesota	Scour Critical — Countermeasures Installed	Fair	1975	50
MAPLE CREEK	Minnesota	Scour Critical — Countermeasures Installed	Fair	1971	50
MIDWAY RIVER	Minnesota	Scour Critical — Countermeasures Installed	Poor	1961	50
HAWK CREEK	Minnesota	Scour Critical — Countermeasures Installed	Good	1980	46
CHUB CREEK	Minnesota	Scour Critical — Countermeasures Installed	Fair	1970	45
OVER E FK DES MO	Minnesota	Scour Critical — Countermeasures Installed	Poor	1966	45
S FK WATONWAN RIVER	Minnesota	Scour Critical — Countermeasures Installed	Good	1987	45
STREAM	Minnesota	Scour Critical — Countermeasures Installed	Fair	1969	45
WEISEL CREEK	Minnesota	Scour Critical — Countermeasures Installed	Fair	1935	44
ETNA CREEK	Minnesota	Scour Critical — Countermeasures Installed	Fair	1935	44
MORGAN CREEK	Minnesota	Scour Critical — Countermeasures Installed	Fair	1964	42
S BR ROOT RIVER	Minnesota	Scour Critical — Countermeasures Installed	Fair	1930	41
PERCH CREEK	Minnesota	Scour Critical — Countermeasures Installed	Fair	1937	40
BUFFALO CREEK	Minnesota	Scour Critical — Countermeasures Installed	Fair	1983	39
TORKELSON CREEK	Minnesota	Scour Critical — Countermeasures Installed	Fair	1951	38
BEAVER CREEK	Minnesota	Scour Critical — Countermeasures Installed	Fair	1973	37
DUSCHEE CREEK	Minnesota	Scour Critical — Countermeasures Installed	Poor	1910	37
BIG COBB RIVER	Minnesota	Scour Critical — Countermeasures Installed	Fair	1967	36
MIDDLE RIVER	Minnesota	Scour Critical — Countermeasures Installed	Good	1980	35
BIG SPRINGS CREEK	Minnesota	Scour Critical — Countermeasures Installed	Fair	1942	35
S FK CROW RIVER	Minnesota	Scour Critical — Countermeasures Installed	Fair	1971	34
STONY BROOK	Minnesota	Scour Critical — Countermeasures Installed	Fair	1975	34
STREAM	Minnesota	Scour Critical — Countermeasures Installed	Fair	1930	30
PERCH CREEK	Minnesota	Scour Critical — Countermeasures Installed	Good	1976	28
ELM CREEK	Minnesota	Scour Critical — Countermeasures Installed	Good	1988	27
MIDDLE RIVER	Minnesota	Scour Critical — Countermeasures Installed	Good	1987	25
W FK BEAVER CREEK	Minnesota	Scour Critical — Countermeasures Installed	Fair	1966	25
S BR BUFFALO RIVER	Minnesota	Scour Critical — Countermeasures Installed	Fair	1980	25
N FK CROW RIVER	Minnesota	Scour Critical — Countermeasures Installed	Poor	1899	24
JORDAN CREEK	Minnesota	Scour Critical — Countermeasures Installed	Fair	1935	24
W SWAN RIVER	Minnesota	Scour Critical — Countermeasures Installed	Poor	1921	24
STREAM	Minnesota	Scour Critical — Countermeasures Installed	Fair	1964	20
E SWAN RIVER	Minnesota	Scour Critical — Countermeasures Installed	Poor	1930	20
N BR MID FK ZUMBRO RIVER	Minnesota	Scour Critical — Countermeasures Installed	Fair	1967	19
STREAM	Minnesota	Scour Critical — Countermeasures Installed	Poor	1964	15

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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