Scour Critical Bridges in Wisconsin
751 bridges in Wisconsin 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 751 bridges in Wisconsin have been identified as vulnerable to scour damage.
| Bridge | State | Scour Status | Condition | Year Built | ADT |
|---|---|---|---|---|---|
| N BR CRAWFISH RIVER | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1928 | 630 |
| APPLE CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Poor | 1911 | 625 |
| TROUT CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Good | 2021 | 610 |
| E BR BIG SANDY CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Poor | 1967 | 602 |
| LITTLE SANDY CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1972 | 600 |
| S BR LITTLE WOLF RIVER | Wisconsin | Scour Critical — Countermeasures Installed | Good | 1890 | 597 |
| E BR FOND DU LAC RIVER | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1967 | 587 |
| BEAVER CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1932 | 587 |
| S BR PIGEON RIVER | Wisconsin | Scour Critical — Countermeasures Installed | Good | 1940 | 565 |
| WAUSAUKEE RIVER | Wisconsin | Scour Critical — Countermeasures Installed | Poor | 1920 | 560 |
| HOHLFELD COULEE CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1939 | 550 |
| STEWART CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Good | 2022 | 540 |
| BR BONNER BRANCH | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1925 | 540 |
| N BR TREMPEALEAU RIVER | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1936 | 530 |
| DENT CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1930 | 530 |
| DEER TAIL CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Poor | 1962 | 529 |
| ROCKY CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1972 | 510 |
| YELLOW RIVER | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1974 | 510 |
| PESHTIGO RIVER | Wisconsin | Scour Critical — Countermeasures Installed | Poor | 1976 | 500 |
| GRANDTOSA CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1966 | 500 |
| ROCK CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1932 | 500 |
| LAKESIDE PARK LAGOON | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1965 | 500 |
| FOX RIVER | Wisconsin | Scour Critical — Countermeasures Installed | Poor | 1958 | 500 |
| MUD BRANCH | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1969 | 490 |
| FOX RIVER | Wisconsin | Scour Critical — Countermeasures Installed | Poor | 1961 | 490 |
| HEMLOCK CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Poor | 1961 | 485 |
| BR MULLET RIVER | Wisconsin | Scour Critical — Countermeasures Installed | Poor | 1954 | 480 |
| BR HEMLOCK CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Poor | 1914 | 480 |
| MILL CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1969 | 479 |
| BR HEMLOCK CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1965 | 479 |
| TURTLE CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Poor | 1887 | 474 |
| WINDLAKE DRAINAGE CANAL | Wisconsin | Scour Critical — Countermeasures Installed | Poor | 1957 | 470 |
| PIGEON RIVER | Wisconsin | Scour Critical — Countermeasures Installed | Good | 1968 | 461 |
| BR N FK BEAVER CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1925 | 455 |
| YAHARA RIVER | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1897 | 450 |
| BRANCH OF ELK CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Good | 2022 | 440 |
| BR PECATONICA RIVER | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1969 | 434 |
| EAGLE LAKE | Wisconsin | Scour Critical — Countermeasures Installed | Poor | 1955 | 431 |
| KOSHKONONG CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Good | 2010 | 430 |
| S BR LITTLE WOLF RIVER | Wisconsin | Scour Critical — Countermeasures Installed | Good | 1900 | 421 |
| E BR HONEY CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1925 | 420 |
| WAUPACA RIVER | Wisconsin | Scour Critical — Countermeasures Installed | Good | 1970 | 414 |
| SPRING BROOK | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1939 | 414 |
| BR RICHLAND CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Poor | 1956 | 411 |
| PENSAUKEE RIVER | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1924 | 410 |
| BR MUD CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Good | 1992 | 400 |
| WHITE HOLLOW CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Poor | 1948 | 400 |
| KOHLSVILLE RIVER | Wisconsin | Scour Critical — Countermeasures Installed | Poor | 1926 | 395 |
| TOAD CREEK | Wisconsin | Scour Critical — Countermeasures Installed | Fair | 1950 | 392 |
| S BR EMBARASS RIVER | Wisconsin | Scour Critical — Countermeasures Installed | Poor | 1966 | 390 |
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.