Scour Critical Bridges in Indiana
756 bridges in Indiana 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 756 bridges in Indiana have been identified as vulnerable to scour damage.
| Bridge | State | Scour Status | Condition | Year Built | ADT |
|---|---|---|---|---|---|
| SUGAR CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1885 | 102 |
| LITTLE RIVER | Indiana | Scour Critical — Countermeasures Installed | Poor | 1935 | 102 |
| MIDDLE FORK SALT CREEK | Indiana | Scour Critical — Countermeasures Installed | Poor | 1984 | 100 |
| PATOKA RIVER | Indiana | Scour Critical — Countermeasures Installed | Good | 1985 | 100 |
| SKELTON CREEK | Indiana | Scour Critical — Countermeasures Installed | Poor | 1993 | 100 |
| LAKE BRANCH CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1988 | 100 |
| E FORK OF WHITE LICK CR | Indiana | Scour Critical — Countermeasures Installed | Poor | 1930 | 100 |
| NETTLE CREEK | Indiana | Scour Critical — Countermeasures Installed | Poor | 1915 | 100 |
| EEL RIVER | Indiana | Scour Critical — Countermeasures Installed | Poor | 1903 | 100 |
| BELL BRANCH | Indiana | Scour Critical — Countermeasures Installed | Fair | 2012 | 100 |
| SULPHUR CREEK | Indiana | Scour Critical — Countermeasures Installed | Poor | 1910 | 100 |
| PATOKA RIVER | Indiana | Scour Critical — Countermeasures Installed | Poor | 1885 | 100 |
| BRANCH OF N. RAMP CREEK | Indiana | Scour Critical — Countermeasures Installed | Poor | 1930 | 100 |
| BRANCH OF LONG BRANCH CR | Indiana | Scour Critical — Countermeasures Installed | Poor | 1940 | 100 |
| FLATROCK RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1968 | 100 |
| FLATROCK RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1945 | 100 |
| MUD CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1970 | 100 |
| FLATROCK RIVER | Indiana | Scour Critical — Countermeasures Installed | Good | 1987 | 100 |
| FLATROCK RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1888 | 100 |
| OWL CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1988 | 100 |
| EEL RIVER | Indiana | Scour Critical — Countermeasures Installed | Poor | 1877 | 100 |
| Branch of SUGAR Creek | Indiana | Scour Critical — Countermeasures Installed | Fair | 1910 | 99 |
| BIG RACCOON Creek | Indiana | Scour Critical — Countermeasures Installed | Poor | 1867 | 95 |
| Branch of Big RACCOON Cr | Indiana | Scour Critical — Countermeasures Installed | Fair | 1930 | 94 |
| BARLOSKI Ditch | Indiana | Scour Critical — Countermeasures Installed | Fair | 1950 | 93 |
| BRANCH OF WHITEWATER RVR | Indiana | Scour Critical — Countermeasures Installed | Fair | 1990 | 90 |
| MISSISSINEWA RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1937 | 90 |
| PATOKA RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1984 | 90 |
| HURRICANE CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1977 | 90 |
| PATOKA RIVER | Indiana | Scour Critical — Countermeasures Installed | Poor | 1888 | 90 |
| HALL Creek | Indiana | Scour Critical — Countermeasures Installed | Good | 1994 | 87 |
| PATOKA RIVER | Indiana | Scour Critical — Countermeasures Installed | Poor | 1979 | 80 |
| SUGAR CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1970 | 80 |
| JACK CREEK | Indiana | Scour Critical — Countermeasures Installed | Poor | 1935 | 80 |
| SUGAR CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1984 | 74 |
| MISSISSINEWA RIVER | Indiana | Scour Critical — Countermeasures Installed | Good | 1986 | 70 |
| PATOKA RIVER | Indiana | Scour Critical — Countermeasures Installed | Poor | 1930 | 66 |
| STRANGERS Branch | Indiana | Scour Critical — Countermeasures Installed | Fair | 1910 | 65 |
| Little Creek | Indiana | Scour Critical — Countermeasures Installed | Good | 1975 | 60 |
| BIG BLUE RIVER | Indiana | Scour Critical — Countermeasures Installed | Good | 1981 | 60 |
| BR N FK LITTLE PIGEON CR | Indiana | Scour Critical — Countermeasures Installed | Fair | 1940 | 50 |
| ROCKY Fork Creek | Indiana | Scour Critical — Countermeasures Installed | Poor | 1900 | 39 |
| JIM Branch | Indiana | Scour Critical — Countermeasures Installed | Poor | 1920 | 39 |
| SUNDERLAND Branch | Indiana | Scour Critical — Countermeasures Installed | Fair | 1920 | 38 |
| ROCK Run Creek | Indiana | Scour Critical — Countermeasures Installed | Fair | 1908 | 33 |
| LEATHERWOOD Creek | Indiana | Scour Critical — Countermeasures Installed | Poor | 1965 | 32 |
| SLAB CAMP CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1996 | 30 |
| DILLON CREEK | Indiana | Scour Critical — Countermeasures Installed | Poor | 1900 | 27 |
| Branch of McIntyre Creek | Indiana | Scour Critical — Countermeasures Installed | Poor | 1910 | 24 |
| COMBS CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1984 | 20 |
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.