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 |
|---|---|---|---|---|---|
| DRAINAGE DITCH | Oregon | Scour Critical — Countermeasures Installed | Good | 1971 | 4,463 |
| FALL CREEK | Oregon | Scour Critical — Countermeasures Installed | Fair | 1970 | 4,424 |
| OSWEGO CANAL | Oregon | Scour Critical — Countermeasures Installed | Fair | 1934 | 4,400 |
| CANYON CREEK | Oregon | Scour Critical — Countermeasures Installed | Fair | 1921 | 4,363 |
| Sutton Creek | Oregon | Scour Critical — Countermeasures Installed | Fair | 1930 | 4,351 |
| Creek | Oregon | Scour Critical — Countermeasures Installed | Fair | 1954 | 4,311 |
| Three Rivers | Oregon | Scour Critical — Countermeasures Installed | Fair | 1949 | 4,294 |
| PASS CREEK | Oregon | Scour Critical — Countermeasures Installed | Fair | 1981 | 4,275 |
| SILVER CREEK | Oregon | Scour Critical — Countermeasures Installed | Fair | 1969 | 4,272 |
| Tumble Creek | Oregon | Scour Critical — Countermeasures Installed | Fair | 1949 | 4,241 |
| SOUTH UMPQUA RIVER | Oregon | Scour Critical — Countermeasures Installed | Fair | 1989 | 4,214 |
| AMAZON CREEK | Oregon | Scour Critical — Countermeasures Installed | Good | 1980 | 4,132 |
| THOMAS CREEK | Oregon | Scour Critical — Countermeasures Installed | Fair | 1961 | 4,066 |
| TUTUILLA CREEK | Oregon | Scour Critical — Countermeasures Installed | Fair | 1988 | 4,062 |
| Marys River | Oregon | Scour Critical — Countermeasures Installed | Fair | 1949 | 4,008 |
| WILLAMETTE R COAST FK | Oregon | Scour Critical — Countermeasures Installed | Fair | 1967 | 4,000 |
| PRAIRIE CREEK | Oregon | Scour Critical — Countermeasures Installed | Good | 1985 | 3,969 |
| TEETER CREEK | Oregon | Scour Critical — Countermeasures Installed | Fair | 1974 | 3,939 |
| PRAIRIE CREEK | Oregon | Scour Critical — Countermeasures Installed | Good | 1980 | 3,924 |
| GRANDE RONDE RIVER | Oregon | Scour Critical — Countermeasures Installed | Fair | 1965 | 3,803 |
| MARYS RIVER | Oregon | Scour Critical — Countermeasures Installed | Fair | 1953 | 3,800 |
| ROGUE RIVER - DODGE BR | Oregon | Scour Critical — Countermeasures Installed | Fair | 1953 | 3,782 |
| Boulder Creek | Oregon | Scour Critical — Countermeasures Installed | Fair | 1932 | 3,723 |
| GATE CREEK | Oregon | Scour Critical — Countermeasures Installed | Fair | 1930 | 3,712 |
| Calapooia River | Oregon | Scour Critical — Countermeasures Installed | Fair | 1963 | 3,679 |
| SPANISH HOLLOW CREEK | Oregon | Scour Critical — Countermeasures Installed | Fair | 1963 | 3,651 |
| SPANISH HOLLOW CREEK | Oregon | Scour Critical — Countermeasures Installed | Fair | 1963 | 3,651 |
| SPANISH HOLLOW CREEK | Oregon | Scour Critical — Countermeasures Installed | Fair | 1963 | 3,651 |
| SPANISH HOLLOW CREEK | Oregon | Scour Critical — Countermeasures Installed | Fair | 1963 | 3,651 |
| WAGNER CR./TALENT AVE. | Oregon | Scour Critical — Countermeasures Installed | Fair | 1914 | 3,649 |
| WILLOW CREEK | Oregon | Scour Critical — Countermeasures Installed | Fair | 1971 | 3,627 |
| BRIGGS CREEK | Oregon | Scour Critical — Countermeasures Installed | Fair | 1953 | 3,566 |
| HILL CREEK | Oregon | Scour Critical — Countermeasures Installed | Good | 1938 | 3,562 |
| PARADISE CREEK | Oregon | Scour Critical — Countermeasures Installed | Fair | 1932 | 3,554 |
| Fern Creek | Oregon | Scour Critical — Countermeasures Installed | Poor | 1953 | 3,545 |
| COQUILLE RIVER | Oregon | Scour Critical — Countermeasures Installed | Fair | 1962 | 3,545 |
| MIDDLE FK COQUILLE RIVER | Oregon | Scour Critical — Countermeasures Installed | Fair | 1984 | 3,518 |
| JOHNSON CREEK | Oregon | Scour Critical — Countermeasures Installed | Fair | 1938 | 3,502 |
| NESTUCCA RIVER | Oregon | Scour Critical — Countermeasures Installed | Fair | 1973 | 3,489 |
| Calapooia Bottoms No. 5 | Oregon | Scour Critical — Countermeasures Installed | Fair | 1963 | 3,487 |
| Siletz River | Oregon | Scour Critical — Countermeasures Installed | Fair | 1956 | 3,467 |
| PHILLIPS CREEK (ELGIN) | Oregon | Scour Critical — Countermeasures Installed | Fair | 1963 | 3,466 |
| Crabtree Creek | Oregon | Scour Critical — Countermeasures Installed | Fair | 1954 | 3,452 |
| KANE CREEK | Oregon | Scour Critical — Countermeasures Installed | Fair | 1959 | 3,442 |
| Minto Creek | Oregon | Scour Critical — Countermeasures Installed | Fair | 1934 | 3,423 |
| NEIL CREEK | Oregon | Scour Critical — Countermeasures Installed | Good | 1966 | 3,421 |
| MILL CREEK | Oregon | Scour Critical — Countermeasures Installed | Poor | 1966 | 3,417 |
| AMES CREEK | Oregon | Scour Critical — Countermeasures Installed | Fair | 1960 | 3,399 |
| SEELEY DITCH | Oregon | Scour Critical — Countermeasures Installed | Good | 2006 | 3,373 |
| Creek | Oregon | Scour Critical — Countermeasures Installed | Poor | 1954 | 3,351 |
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.