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 |
|---|---|---|---|---|---|
| CLEAR CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1988 | 2,798 |
| PIPE CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1942 | 2,741 |
| LITTLE BLUE RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1987 | 2,718 |
| CHIPPEWANUCK CREEK | Indiana | Scour Critical — Countermeasures Installed | Good | 1993 | 2,691 |
| FALL CREEK | Indiana | Scour Critical — Countermeasures Installed | Good | 1976 | 2,690 |
| SOL SHANK DITCH | Indiana | Scour Critical — Countermeasures Installed | Fair | 1988 | 2,639 |
| WALNUT FORK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1953 | 2,630 |
| EAST FORK WHITE RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1973 | 2,600 |
| LITTLE INDIAN CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1966 | 2,590 |
| BOOTS CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1976 | 2,580 |
| M FORK WILDCAT CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1981 | 2,574 |
| M FORK WILDCAT CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1942 | 2,573 |
| SIMMONS CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1921 | 2,556 |
| EIGHT MILE CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1939 | 2,528 |
| HANNA CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1962 | 2,500 |
| WHITEWATER RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1976 | 2,477 |
| MARTINDALE CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1941 | 2,417 |
| ARNOLD CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1983 | 2,339 |
| SALT CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1976 | 2,339 |
| OPOSSUM RUN CR 700 W | Indiana | Scour Critical — Countermeasures Installed | Fair | 1976 | 2,330 |
| CARPENTER CREEK | Indiana | Scour Critical — Countermeasures Installed | Good | 1929 | 2,317 |
| WHITE RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1937 | 2,310 |
| WHITE RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1968 | 2,300 |
| SPRING CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1938 | 2,282 |
| HARBER DITCH | Indiana | Scour Critical — Countermeasures Installed | Fair | 1989 | 2,272 |
| SUGAR CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1970 | 2,260 |
| SUGAR CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1995 | 2,259 |
| ROBB CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1964 | 2,249 |
| WHITE RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1985 | 2,230 |
| LIMBERLOST CREEK | Indiana | Scour Critical — Countermeasures Installed | Good | 1962 | 2,227 |
| OPOSSUM RUN CR 700 W | Indiana | Scour Critical — Countermeasures Installed | Fair | 1976 | 2,220 |
| GOODWINE CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1985 | 2,198 |
| BIG BLUE RIVER | Indiana | Scour Critical — Countermeasures Installed | Good | 1987 | 2,190 |
| WILDCAT CREEK | Indiana | Scour Critical — Countermeasures Installed | Good | 1976 | 2,178 |
| DRIFTWOOD RIVER | Indiana | Scour Critical — Countermeasures Installed | Poor | 1966 | 2,150 |
| BOLEN DITCH | Indiana | Scour Critical — Countermeasures Installed | Poor | 1946 | 2,127 |
| BIG BLUE RIVER | Indiana | Scour Critical — Countermeasures Installed | Good | 1975 | 2,125 |
| HARBER DITCH | Indiana | Scour Critical — Countermeasures Installed | Fair | 1989 | 2,106 |
| MISHLER DITCH | Indiana | Scour Critical — Countermeasures Installed | Fair | 1988 | 2,080 |
| CLEAR CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1982 | 2,076 |
| BIG MONON CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1946 | 2,072 |
| WHITE RIVER OVERFLOW | Indiana | Scour Critical — Countermeasures Installed | Fair | 1990 | 2,064 |
| MISSISSINEWA RIVER | Indiana | Scour Critical — Countermeasures Installed | Good | 1975 | 2,030 |
| BIG RACCOON CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1947 | 2,026 |
| KIMBERLIN CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1980 | 2,005 |
| BIG CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1992 | 1,994 |
| SUGAR CREEK | Indiana | Scour Critical — Countermeasures Installed | Good | 1989 | 1,960 |
| WABASH RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1981 | 1,910 |
| LOCUST CREEK | Indiana | Scour Critical — Countermeasures Installed | Poor | 1906 | 1,906 |
| MAJENICA CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1965 | 1,880 |
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.