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
DEER CREEK	Oregon	Scour Critical — Countermeasures Installed	Poor	1968	64
TROUT CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1965	62
HINKLE CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1979	61
DRY CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1958	59
LITTLE CLEAR CREEK	Oregon	Scour Critical — Countermeasures Installed	Good	1976	58
ROCK CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1962	58
ROCK CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1960	57
WILDHORSE CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1993	56
MAIN STAYTON CANAL	Oregon	Scour Critical — Countermeasures Installed	Fair	1975	56
ROCK CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1990	56
CAMAS CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1984	56
SUCCOR CR	Oregon	Scour Critical — Countermeasures Installed	Fair	1988	55
JOHN DAY R(RIVERSIDE BR)	Oregon	Scour Critical — Countermeasures Installed	Fair	1959	55
PEDEE CREEK	Oregon	Scour Critical — Countermeasures Installed	Good	1978	55
NORTH FORK MOSIER CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1950	55
JOHNSON CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1954	54
N POWDER R (BIDWELL LANE	Oregon	Scour Critical — Countermeasures Installed	Fair	1929	53
BIG ELK CREEK	Oregon	Scour Critical — Countermeasures Installed	Good	1963	53
PARSNIP CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1965	53
COW CREEK (SCOTT)	Oregon	Scour Critical — Countermeasures Installed	Fair	1977	52
ALDER CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1962	51
SHOTGUN CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1965	50
CONGDON CREEK	Oregon	Scour Critical — Countermeasures Installed	Good	1966	50
NORTH FORK EAST FORK RO	Oregon	Scour Critical — Countermeasures Installed	Good	1962	50
BURNT RIVER (LIME)	Oregon	Scour Critical — Countermeasures Installed	Fair	1934	50
SOUTH FORK JOHN DAY RIVE	Oregon	Scour Critical — Countermeasures Installed	Good	1966	48
YAQUINA RIVER	Oregon	Scour Critical — Countermeasures Installed	Fair	2018	47
CAMAS CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1975	47
WILLOW CR	Oregon	Scour Critical — Countermeasures Installed	Fair	1986	46
CAMAS CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1989	44
WILLOW CREEK EB	Oregon	Scour Critical — Countermeasures Installed	Good	1986	43
FIVE RIVERS	Oregon	Scour Critical — Countermeasures Installed	Fair	1975	42
BULLY CREEK	Oregon	Scour Critical — Countermeasures Installed	Good	1986	41
HENRY CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1959	41
S FORK NEAL CR	Oregon	Scour Critical — Countermeasures Installed	Good	1967	41
JOHN DAY R(PRAIRIE CITY)	Oregon	Scour Critical — Countermeasures Installed	Fair	1960	41
CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1967	41
NORTH FORK CABIN CREEK	Oregon	Scour Critical — Countermeasures Installed	Good	2009	40
CHESNIMNUS CREEK	Oregon	Scour Critical — Countermeasures Installed	Poor	1975	39
N.MIDDLE FORK WILLAMETTE	Oregon	Scour Critical — Countermeasures Installed	Fair	1945	38
JOHN DAY RIVER	Oregon	Scour Critical — Countermeasures Installed	Fair	1990	35
DEADWOOD CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1984	35
DEADWOOD CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1988	35
WARDS CR/BOYD RD.	Oregon	Scour Critical — Countermeasures Installed	Good	1989	33
DEADWOOD CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1964	33
DEADWOOD CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1964	33
FIVE POINTS CRK	Oregon	Scour Critical — Countermeasures Installed	Fair	1921	32
LITTLE ELK CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	2009	32
PINE CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1935	32
WALL CREEK	Oregon	Scour Critical — Countermeasures Installed	Fair	1969	31

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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