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
PHOENIX CAN/JASMINE AVE Oregon Scour Critical — Countermeasures Installed Good 1970 634
B RODGERS CREEK Oregon Scour Critical — Countermeasures Installed Fair 1928 630
CHEWAUCAN RIVER PAISLEY Oregon Scour Critical — Countermeasures Installed Fair 1966 625
MILL CREEK Oregon Scour Critical — Countermeasures Installed Fair 1966 624
LOST RIVER Oregon Scour Critical — Countermeasures Installed Fair 1956 612
MUNGER CREEK Oregon Scour Critical — Countermeasures Installed Fair 1988 608
JOHNSON CREEK Oregon Scour Critical — Countermeasures Installed Good 2001 605
SYKES CR./SYKES CR. RD. Oregon Scour Critical — Countermeasures Installed Good 1977 602
GURKIN CANYON CREEK Oregon Scour Critical — Countermeasures Installed Fair 1920 600
LOUIS CREEK Oregon Scour Critical — Countermeasures Installed Fair 1939 600
THREEMILE CREEK Oregon Scour Critical — Countermeasures Installed Poor 1950 598
WATERS CREEK Oregon Scour Critical — Countermeasures Installed Fair 1955 597
WILLIAMSON RIVER Oregon Scour Critical — Countermeasures Installed Good 1982 596
SPENCER CREEK Oregon Scour Critical — Countermeasures Installed Fair 1991 596
EAST FORK HOOD RIVER Oregon Scour Critical — Countermeasures Installed Fair 1964 594
SUTHERLIN CREEK Oregon Scour Critical — Countermeasures Installed Fair 1990 592
EDSON CREEK Oregon Scour Critical — Countermeasures Installed Good 1955 590
POWDER RIVER Oregon Scour Critical — Countermeasures Installed Fair 1987 589
E FK ILLINOIS RIVER Oregon Scour Critical — Countermeasures Installed Good 1988 585
PINE CREEK Oregon Scour Critical — Countermeasures Installed Fair 1984 584
PP&L PENSTOCK Oregon Scour Critical — Countermeasures Installed Fair 1962 583
N UMPQUA R (MARSTERS BR) Oregon Scour Critical — Countermeasures Installed Fair 1959 583
COPELAND CREEK Oregon Scour Critical — Countermeasures Installed Fair 1960 583
MILL RACE CANAL Oregon Scour Critical — Countermeasures Installed Fair 1960 581
ELK CREEK Oregon Scour Critical — Countermeasures Installed Fair 1935 579
GRANDE RONDE RIVER Oregon Scour Critical — Countermeasures Installed Good 1972 578
Nehalem River Oregon Scour Critical — Countermeasures Installed Fair 1957 577
Bear Creek Oregon Scour Critical — Countermeasures Installed Fair 1954 576
TUALATIN RIVER Oregon Scour Critical — Countermeasures Installed Fair 1921 576
PHILLIPS CREEK Oregon Scour Critical — Countermeasures Installed Good 1965 574
Ritner Creek Oregon Scour Critical — Countermeasures Installed Good 1976 570
GASTON SLOUGH Oregon Scour Critical — Countermeasures Installed Fair 1934 568
DIXON CREEK Oregon Scour Critical — Countermeasures Installed Fair 1987 563
WILDHORSE CREEK Oregon Scour Critical — Countermeasures Installed Fair 1924 562
COAST FK. WILLAMETTE R. Oregon Scour Critical — Countermeasures Installed Good 2003 562
BEAVER CREEK Oregon Scour Critical — Countermeasures Installed Good 1930 562
PINE CREEK Oregon Scour Critical — Countermeasures Installed Good 1971 554
FULTON CANYON CREEK Oregon Scour Critical — Countermeasures Installed Fair 1966 551
WILDHORSE CREEK Oregon Scour Critical — Countermeasures Installed Fair 1960 541
COW CREEK Oregon Scour Critical — Countermeasures Installed Fair 1965 537
CALAPOOYA CREEK Oregon Scour Critical — Countermeasures Installed Fair 1988 536
BUTTE CREEK Oregon Scour Critical — Countermeasures Installed Fair 1965 536
MUDDY CREEK Oregon Scour Critical — Countermeasures Installed Fair 1960 535
Fishhawk Creek Oregon Scour Critical — Countermeasures Installed Fair 1989 528
WILLAMETTE RIVER Oregon Scour Critical — Countermeasures Installed Fair 1932 525
Foland Creek Oregon Scour Critical — Countermeasures Installed Fair 2011 525
EAGLE CR (SNAKE RIVER RD Oregon Scour Critical — Countermeasures Installed Good 1959 515
CATHERINE CR(STATE YARD) Oregon Scour Critical — Countermeasures Installed Fair 1966 514
GRANDE RONDE R(HILGARD) Oregon Scour Critical — Countermeasures Installed Fair 1951 514
JORDAN CREEK Oregon Scour Critical — Countermeasures Installed Fair 1954 514

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.