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 |
|---|---|---|---|---|---|
| LAURAMIE CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1925 | 1,244 |
| LEATHERWOOD CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1947 | 1,218 |
| LITTLE CEDAR CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1988 | 1,213 |
| YELLOW RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 2001 | 1,209 |
| GRIMES Ditch | Indiana | Scour Critical — Countermeasures Installed | Poor | 1979 | 1,207 |
| WEST FORK TURMAN CREEK | Indiana | Scour Critical — Countermeasures Installed | Poor | 1936 | 1,188 |
| EAST FORK TURMAN CREEK | Indiana | Scour Critical — Countermeasures Installed | Poor | 1936 | 1,188 |
| ST JOSEPH RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1960 | 1,188 |
| BIG CAMP CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1968 | 1,173 |
| MISSISSINEWA RIVER | Indiana | Scour Critical — Countermeasures Installed | Good | 1972 | 1,160 |
| BLUE RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1937 | 1,151 |
| BR LITTLE RACCOON CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1968 | 1,149 |
| PLACE DITCH | Indiana | Scour Critical — Countermeasures Installed | Fair | 1993 | 1,137 |
| SALAMONIE RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1965 | 1,125 |
| SUGAR CREEK | Indiana | Scour Critical — Countermeasures Installed | Good | 1984 | 1,115 |
| SALAMONIE RIVER | Indiana | Scour Critical — Countermeasures Installed | Good | 1900 | 1,103 |
| ST MARYS RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1963 | 1,099 |
| BRANCH LITTLE PIGEON CR | Indiana | Scour Critical — Countermeasures Installed | Fair | 1930 | 1,086 |
| NORTH FORK CLIFTY CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1968 | 1,069 |
| STITES DITCH | Indiana | Scour Critical — Countermeasures Installed | Poor | 1950 | 1,042 |
| IROQUOIS RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1965 | 1,037 |
| UNNAMED DITCH | Indiana | Scour Critical — Countermeasures Installed | Poor | 1930 | 1,020 |
| MITCHELL BR INDIAN CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1984 | 1,010 |
| PATOKA RIVER | Indiana | Scour Critical — Countermeasures Installed | Good | 1993 | 1,010 |
| KENT DITCH | Indiana | Scour Critical — Countermeasures Installed | Fair | 2001 | 1,004 |
| BIG BLUE RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1950 | 1,000 |
| MAUMEE RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1985 | 1,000 |
| TIPPECANOE RIVER | Indiana | Scour Critical — Countermeasures Installed | Good | 1977 | 1,000 |
| WHITE RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1986 | 1,000 |
| WABASH RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1920 | 972 |
| GARRISON CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1965 | 968 |
| MUD PINE CREEK | Indiana | Scour Critical — Countermeasures Installed | Poor | 1933 | 950 |
| COAL RUN CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1936 | 940 |
| SPRING Creek | Indiana | Scour Critical — Countermeasures Installed | Poor | 1941 | 908 |
| WILLIAMS Creek | Indiana | Scour Critical — Countermeasures Installed | Fair | 1940 | 904 |
| WHITE RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1974 | 900 |
| HERRIOTTS CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1946 | 900 |
| DEVON CREEK | Indiana | Scour Critical — Countermeasures Installed | Poor | 1962 | 897 |
| TIPPECANOE RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1970 | 890 |
| MISSISSINEWA RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1974 | 890 |
| ARNOLD CREEK | Indiana | Scour Critical — Countermeasures Installed | Poor | 1967 | 879 |
| YELLOW RIVER | Indiana | Scour Critical — Countermeasures Installed | Poor | 1965 | 875 |
| YELLOW RIVER | Indiana | Scour Critical — Countermeasures Installed | Good | 1984 | 875 |
| BRANCH OF W FORK MILL CR | Indiana | Scour Critical — Countermeasures Installed | Poor | 1935 | 875 |
| KENT DITCH | Indiana | Scour Critical — Countermeasures Installed | Fair | 1930 | 861 |
| BRANCH OF MILLS CREEK | Indiana | Scour Critical — Countermeasures Installed | Poor | 1940 | 860 |
| SUGAR CREEK | Indiana | Scour Critical — Countermeasures Installed | Poor | 1975 | 860 |
| WABASH RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1984 | 815 |
| LITTLE SHAWNEE CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1956 | 808 |
| BRUSH FORK TANNERS CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1987 | 800 |
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.