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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
BUTTE CREEK Oregon Scour Critical — Countermeasures Installed Fair 1964 513
GRAVE CREEK Oregon Scour Critical — Countermeasures Installed Fair 1955 512
BRIDGE CREEK Oregon Scour Critical — Countermeasures Installed Fair 1929 509
LAMBERT SLOUGH Oregon Scour Critical — Countermeasures Installed Fair 1964 508
LITTLE LUCKIAMUTE RIVER Oregon Scour Critical — Countermeasures Installed Good 2006 499
THOMAS CREEK Oregon Scour Critical — Countermeasures Installed Fair 1979 494
SOUTH FORK ASH CREEK Oregon Scour Critical — Countermeasures Installed Fair 1955 489
LONG CREEK Oregon Scour Critical — Countermeasures Installed Fair 1985 485
HURRICANE CREEK Oregon Scour Critical — Countermeasures Installed Fair 1955 480
FOX CREEK Oregon Scour Critical — Countermeasures Installed Fair 1941 479
DAYS CREEK Oregon Scour Critical — Countermeasures Installed Fair 1952 479
WILD HORSE CREEK Oregon Scour Critical — Countermeasures Installed Fair 1956 474
LOUSIGNONT CREEK Oregon Scour Critical — Countermeasures Installed Good 1984 472
WEST FORK WILLIAMS CREEK Oregon Scour Critical — Countermeasures Installed Fair 1973 472
REEVES CREEK Oregon Scour Critical — Countermeasures Installed Fair 1970 468
SMITH CREEK Oregon Scour Critical — Countermeasures Installed Fair 1941 460
CONYERS CREEK Oregon Scour Critical — Countermeasures Installed Fair 1978 458
Beneke Creek Oregon Scour Critical — Countermeasures Installed Fair 1934 455
N Fork Klaskanine River Oregon Scour Critical — Countermeasures Installed Fair 1921 453
Jack Horner Creek Oregon Scour Critical — Countermeasures Installed Fair 1951 452
NEHALEM RIVER Oregon Scour Critical — Countermeasures Installed Poor 1963 451
WALLOOSKEE RIVER Oregon Scour Critical — Countermeasures Installed Fair 1988 450
N Fk Nehalem River Oregon Scour Critical — Countermeasures Installed Fair 1937 448
WILLOW CREEK Oregon Scour Critical — Countermeasures Installed Fair 1956 448
MALHEUR RIVER Oregon Scour Critical — Countermeasures Installed Good 1969 445
DEADWOOD CREEK Oregon Scour Critical — Countermeasures Installed Fair 1928 443
MILL CREEK Oregon Scour Critical — Countermeasures Installed Good 1974 438
GORDON CREEK Oregon Scour Critical — Countermeasures Installed Poor 2006 437
BEAVER CREEK Oregon Scour Critical — Countermeasures Installed Fair 2005 437
MERYL CREEK Oregon Scour Critical — Countermeasures Installed Poor 1970 434
ROCK CREEK Oregon Scour Critical — Countermeasures Installed Fair 1965 432
KIZER SLOUGH Oregon Scour Critical — Countermeasures Installed Fair 1984 430
CEDAR FLAT CREEK Oregon Scour Critical — Countermeasures Installed Fair 1984 430
MARSHALL SLOUGH Oregon Scour Critical — Countermeasures Installed Good 1985 430
POLE CREEK Oregon Scour Critical — Countermeasures Installed Fair 1979 426
HARRIS CREEK Oregon Scour Critical — Countermeasures Installed Fair 1963 426
NORTH FORK NEHALEM RIVER Oregon Scour Critical — Countermeasures Installed Fair 1987 424
COYOTE CREEK Oregon Scour Critical — Countermeasures Installed Good 2006 421
BEAVER CREEK Oregon Scour Critical — Countermeasures Installed Poor 1964 417
Greenleaf Creek Oregon Scour Critical — Countermeasures Installed Fair 1951 416
PLEASANT CR/PLEASANT RD Oregon Scour Critical — Countermeasures Installed Good 1975 415
JOHN DAY RIVER Oregon Scour Critical — Countermeasures Installed Fair 1962 408
OWYHEE RIVER Oregon Scour Critical — Countermeasures Installed Fair 1974 404
EVANS CREEK Oregon Scour Critical — Countermeasures Installed Fair 1955 404
M FK JOHN DAY R (AUSTIN) Oregon Scour Critical — Countermeasures Installed Good 1972 402
Cedar Creek Oregon Scour Critical — Countermeasures Installed Good 1989 400
PINE CREEK (HALFWAY) Oregon Scour Critical — Countermeasures Installed Fair 1960 394
WHETSTONE CR Oregon Scour Critical — Countermeasures Installed Fair 1969 394
ILLINOIS RIVER Oregon Scour Critical — Countermeasures Installed Fair 1966 393
THOMPSON CREEK Oregon Scour Critical — Countermeasures Installed Fair 1960 393

Scour Critical Rating Codes

Code 2 — UnaddressedBridge is scour critical with no countermeasures installed. The foundation is vulnerable and no protective action has been taken.
Code 3 — Countermeasures InstalledProtective measures (riprap, sheet piling, etc.) have been installed to reduce scour risk, but the bridge remains classified as scour critical.
Code 6 — Countermeasures IneffectiveProtective 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.

All Bridges Poor Condition Historic Bridges Bridge Stats