Scour Critical Bridges in Oregon

1,231 bridges in Oregon 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 1,231 bridges in Oregon have been identified as vulnerable to scour damage.

Clear

Bridge	State	Scour Status	Condition	Year Built	ADT
MIDDLE FORK JOHN DAY R	Oregon	Scour Critical — Countermeasures Installed	Fair	1959	99
TUTUILLA CREEK	Oregon	Scour Critical — Countermeasures Installed	Good	1998	99
SMALL STREAM	Oregon	Scour Critical — Countermeasures Installed	Poor	1952	99
JORDAN CR	Oregon	Scour Critical — Countermeasures Installed	Fair	1978	99
DRY CREEK	Oregon	Scour Critical — Countermeasures Installed	Poor	1959	97
UMATILLA RIVER	Oregon	Scour Critical — Countermeasures Installed	Fair	1928	96
BULLY CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1977	94
ROCK CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1957	93
CRONIN CREEK	Oregon	Scour Critical — Countermeasures Installed	Poor	1984	92
LUCKIAMUTE RIVER	Oregon	Scour Critical — Countermeasures Installed	Fair	1997	92
PRICE CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	2009	91
QUARTZ CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1960	90
SYCAN RIVER	Oregon	Scour Critical — Countermeasures Installed	Good	1982	89
FIDDLE CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1982	89
WILLOW CR (GUERRICAGOTIA	Oregon	Scour Critical — Countermeasures Installed	Fair	1976	88
TURNER CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1958	87
LONG TOM RIVER	Oregon	Scour Critical — Countermeasures Installed	Fair	2006	87
LOST CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1978	87
ANTELOPE CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1945	86
MALHEUR RIVER	Oregon	Scour Critical — Countermeasures Installed	Fair	1989	85
MALHEUR RIVER	Oregon	Scour Critical — Countermeasures Installed	Good	1979	85
SOUTH FORK COQUILLE R.	Oregon	Scour Critical — Countermeasures Installed	Poor	1979	84
FISHHAWK CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1985	83
BUCK CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1963	82
PINE CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1955	82
BIRCH CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1927	82
SALT CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1976	81
FLORAS CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1979	81
TEN MILE CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1997	81
MCKAY CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1983	78
ELK CREEK	Oregon	Scour Critical — Countermeasures Installed	Good	1984	78
EIGHTMILE CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1922	75
EIGHTMILE CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1922	75
EIGHTMILE CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1922	75
EIGHTMILE CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1923	75
ALSEA RIVER	Oregon	Scour Critical — Countermeasures Installed	Fair	1959	75
FIDDLE CREEK	Oregon	Scour Critical — Countermeasures Installed	Good	1982	75
PINE CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1966	74
SOUTH FORK JOHN DAY RIVE	Oregon	Scour Critical — Countermeasures Installed	Fair	1966	74
ELK CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1963	73
HEMLOCK CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	2008	73
CANYON CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1972	72
LOUSE CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1973	71
JACKSON CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1979	70
LITTLE LUCKIAMUTE RIVER	Oregon	Scour Critical — Countermeasures Installed	Fair	1981	67
WILLOW CREEK EB	Oregon	Scour Critical — Countermeasures Installed	Good	1988	66
INDIAN CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1977	66
COYOTE CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1978	65
DOAK CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1977	65
HUMBUG CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1985	64

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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