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.
| 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 — 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.