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
OLD LONG TOM CHANNEL Oregon Scour Critical — Countermeasures Installed Fair 1981 838
SALMON CREEK Oregon Scour Critical — Countermeasures Installed Fair 1966 838
NEAL CREEK Oregon Scour Critical — Countermeasures Installed Poor 1975 838
LONG TOM RIVER Oregon Scour Critical — Countermeasures Installed Fair 1978 832
MCDOWELL CREEK Oregon Scour Critical — Countermeasures Installed Fair 1958 824
AMAZON CREEK Oregon Scour Critical — Countermeasures Installed Fair 1969 819
ROCK CR. (PICTURE GORGE) Oregon Scour Critical — Countermeasures Installed Fair 1941 814
CROOKS CREEK Oregon Scour Critical — Countermeasures Installed Fair 1972 805
TEN MILE CREEK Oregon Scour Critical — Countermeasures Installed Fair 1963 797
BEAVER CREEK Oregon Scour Critical — Countermeasures Installed Fair 1979 793
UPRR & GRANDE RONDE R Oregon Scour Critical — Countermeasures Installed Fair 1960 790
SLOUGH Oregon Scour Critical — Countermeasures Installed Good 1977 786
BRUSH CREEK Oregon Scour Critical — Countermeasures Installed Good 1969 772
MILL CREEK Oregon Scour Critical — Countermeasures Installed Poor 1941 770
USRS FEED CANAL (ECHO) Oregon Scour Critical — Countermeasures Installed Fair 1980 765
Scott Creek Oregon Scour Critical — Countermeasures Installed Fair 1949 764
B-53 X CRYSTAL SPRINGS Oregon Scour Critical — Countermeasures Installed Fair 1955 762
DEADMAN CREEK Oregon Scour Critical — Countermeasures Installed Good 2005 762
BEAVER CREEK Oregon Scour Critical — Countermeasures Installed Fair 1918 759
MAXFIELD CREEK Oregon Scour Critical — Countermeasures Installed Fair 1964 750
West Fork Drift Creek Oregon Scour Critical — Countermeasures Installed Fair 1949 747
ESLICK CREEK Oregon Scour Critical — Countermeasures Installed Fair 1983 746
YAMHILL RIVER Oregon Scour Critical — Countermeasures Installed Fair 1960 742
CHEWAUCAN RIVER GRAVEL Oregon Scour Critical — Countermeasures Installed Fair 1965 738
DEBRICK SLOUGH Oregon Scour Critical — Countermeasures Installed Fair 1988 738
BENSON CREEK Oregon Scour Critical — Countermeasures Installed Good 1957 732
Ford Creek Oregon Scour Critical — Countermeasures Installed Good 2006 729
DRIFT CREEK Oregon Scour Critical — Countermeasures Installed Poor 1964 725
PUDDING RIVER Oregon Scour Critical — Countermeasures Installed Fair 1958 725
BEAVER CREEK Oregon Scour Critical — Countermeasures Installed Fair 1958 725
COW CREEK Oregon Scour Critical — Countermeasures Installed Fair 1986 724
MUDDY CREEK OVERFLOW Oregon Scour Critical — Countermeasures Installed Good 1960 723
Panther Creek Oregon Scour Critical — Countermeasures Installed Poor 1957 717
EAGLE CRK (RICHLAND) Oregon Scour Critical — Countermeasures Installed Fair 1925 712
Lake Creek Overflow Oregon Scour Critical — Countermeasures Installed Fair 1960 697
DAIRY CREEK Oregon Scour Critical — Countermeasures Installed Fair 1984 694
SLOUGH Oregon Scour Critical — Countermeasures Installed Fair 1983 675
UPPER BEAR CREEK Oregon Scour Critical — Countermeasures Installed Good 1959 675
SOUTH BEAVER CREEK Oregon Scour Critical — Countermeasures Installed Good 2007 675
B-56 OVER JOHNSON CREEK Oregon Scour Critical — Countermeasures Installed Fair 1934 674
LEWIS & CLARK RIVER Oregon Scour Critical — Countermeasures Installed Fair 1958 671
WILLOW CREEK EB Oregon Scour Critical — Countermeasures Installed Poor 1958 670
Lake Creek Oregon Scour Critical — Countermeasures Installed Fair 1960 669
Swamp Creek Oregon Scour Critical — Countermeasures Installed Fair 1960 669
NORTH FORK ASH CREEK Oregon Scour Critical — Countermeasures Installed Good 1998 663
E FORK HOOD RIVER Oregon Scour Critical — Countermeasures Installed Fair 1969 660
DRY CREEK Oregon Scour Critical — Countermeasures Installed Fair 1966 645
EMILE CREEK Oregon Scour Critical — Countermeasures Installed Good 2005 643
JUMPOFF JOE CREEK Oregon Scour Critical — Countermeasures Installed Good 1977 640
BRYAN CREEK Oregon Scour Critical — Countermeasures Installed Fair 1970 635

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.