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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
ROCK CREEK Oregon Scour Critical — Countermeasures Installed Good 1976 387
ROW RIVER Oregon Scour Critical — Countermeasures Installed Fair 1962 386
FAIRVIEW CREEK Oregon Scour Critical — Countermeasures Installed Fair 1959 386
BEAR CREEK Oregon Scour Critical — Countermeasures Installed Fair 1975 386
OWYHEE RIVER Oregon Scour Critical — Countermeasures Installed Fair 1973 383
SCOGGINS CREEK Oregon Scour Critical — Countermeasures Installed Fair 1974 382
GALES CREEK Oregon Scour Critical — Countermeasures Installed Fair 1981 375
BURNT R(WEATHERBY) R/W Oregon Scour Critical — Countermeasures Installed Fair 1972 372
HARPER CREEK Oregon Scour Critical — Countermeasures Installed Fair 1958 367
ALDER CREEK Oregon Scour Critical — Countermeasures Installed Fair 1958 367
JUNIPER CREEK Oregon Scour Critical — Countermeasures Installed Fair 1958 367
MATHIAS CREEK Oregon Scour Critical — Countermeasures Installed Fair 1958 367
NEHALEM RIVER Oregon Scour Critical — Countermeasures Installed Fair 2006 367
SOUTH UMPQUA RIVER Oregon Scour Critical — Countermeasures Installed Fair 1925 364
W FK MILLICOMA Oregon Scour Critical — Countermeasures Installed Fair 1956 361
SHARPS CREEK Oregon Scour Critical — Countermeasures Installed Fair 1957 360
S BRANCH QUEENS CR Oregon Scour Critical — Countermeasures Installed Good 1984 360
LUCKIAMUTE RIVER Oregon Scour Critical — Countermeasures Installed Fair 1958 360
SHARPS CREEK Oregon Scour Critical — Countermeasures Installed Fair 1973 360
DICK CREEK Oregon Scour Critical — Countermeasures Installed Good 1993 357
DRY GULCH Oregon Scour Critical — Countermeasures Installed Good 1985 357
HAY CANYON Oregon Scour Critical — Countermeasures Installed Fair 1959 357
MEDFORD IRRIGATION CANAL Oregon Scour Critical — Countermeasures Installed Good 1983 351
DEER CREEK Oregon Scour Critical — Countermeasures Installed Fair 2011 345
S. Fork Alsea Overflow Oregon Scour Critical — Countermeasures Installed Good 1937 342
EMIGRANT CREEK Oregon Scour Critical — Countermeasures Installed Fair 1966 342
NEHALEM RIVER Oregon Scour Critical — Countermeasures Installed Fair 1973 338
MOLALLA OVERFLOW Oregon Scour Critical — Countermeasures Installed Fair 1959 338
ASVICK CREEK Oregon Scour Critical — Countermeasures Installed Fair 1989 338
CLACK RVR. (CARTER BR.) Oregon Scour Critical — Countermeasures Installed Fair 1954 337
CLACK RIVER (ARMSTRONG) Oregon Scour Critical — Countermeasures Installed Fair 1954 337
GREASY CREEK Oregon Scour Critical — Countermeasures Installed Good 2000 336
BULLY CREEK Oregon Scour Critical — Countermeasures Installed Good 1972 332
LUCKIAMUTE RIVER Oregon Scour Critical — Countermeasures Installed Fair 1928 332
BIG ROCK CREEK Oregon Scour Critical — Countermeasures Installed Poor 1958 331
WILLOW CREEK EB Oregon Scour Critical — Countermeasures Installed Fair 1970 330
N FK NEHALEM Oregon Scour Critical — Countermeasures Installed Good 1989 330
N. Fork Klaskanine River Oregon Scour Critical — Countermeasures Installed Fair 1934 328
N. FK. CLARK CREEK Oregon Scour Critical — Countermeasures Installed Fair 1999 328
ROCK CREEK Oregon Scour Critical — Countermeasures Installed Fair 1980 328
BULLY CREEK Oregon Scour Critical — Countermeasures Installed Fair 1967 328
FERGUSON CREEK Oregon Scour Critical — Countermeasures Installed Fair 1979 328
WEST CAMP CREEK Oregon Scour Critical — Countermeasures Installed Fair 1979 327
SIUSLAW RIVER Oregon Scour Critical — Countermeasures Installed Fair 1984 325
SIUSLAW RIVER Oregon Scour Critical — Countermeasures Installed Fair 1975 325
DEEP CREEK Oregon Scour Critical — Countermeasures Installed Fair 2000 322
MILL CREEK Oregon Scour Critical — Countermeasures Installed Fair 1958 321
FOX CREEK Oregon Scour Critical — Countermeasures Installed Good 1974 320
DESCHUTES RV/TWIN BR Oregon Scour Critical — Countermeasures Installed Fair 1981 319
FAWCETT CREEK Oregon Scour Critical — Countermeasures Installed Fair 1979 318

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