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 |
|---|---|---|---|---|---|
| CARROLL DITCH | Indiana | Scour Critical — Countermeasures Installed | Fair | 1987 | 798 |
| MIDDLE FORK CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1968 | 788 |
| SUGAR CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1979 | 772 |
| WABASH RIVER | Indiana | Scour Critical — Countermeasures Installed | Poor | 1906 | 750 |
| LITTLE WABASH RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1962 | 750 |
| SUGAR CREEK | Indiana | Scour Critical — Countermeasures Installed | Poor | 1978 | 712 |
| SUGAR CREEK | Indiana | Scour Critical — Countermeasures Installed | Good | 1968 | 710 |
| MISSISSINEWA RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1965 | 700 |
| GRASSY FORK CREEK | Indiana | Scour Critical — Countermeasures Installed | Good | 1966 | 680 |
| DAVIS BRANCH | Indiana | Scour Critical — Countermeasures Installed | Fair | 1968 | 674 |
| W FORK BIG WALNUT CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1937 | 670 |
| IROQUOIS RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1985 | 661 |
| LOST RIVER | Indiana | Scour Critical — Countermeasures Installed | Poor | 1964 | 654 |
| FLATROCK RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1935 | 650 |
| DEER CREEK | Indiana | Scour Critical — Countermeasures Installed | Poor | 1970 | 647 |
| TIPTON CREEK | Indiana | Scour Critical — Countermeasures Installed | Good | 1991 | 645 |
| LITTLE WABASH RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1995 | 643 |
| BRANCH KRAUS CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1984 | 633 |
| HAYWORTH SLOUGH | Indiana | Scour Critical — Countermeasures Installed | Fair | 1925 | 629 |
| BR OF W FK WHITE LICK CR | Indiana | Scour Critical — Countermeasures Installed | Fair | 1935 | 600 |
| MISSISSINEWA RIVER | Indiana | Scour Critical — Countermeasures Installed | Poor | 1902 | 600 |
| WHITE RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1965 | 590 |
| MIDDLE FK BIG WALNUT CR | Indiana | Scour Critical — Countermeasures Installed | Fair | 1972 | 582 |
| WADDLE BRANCH | Indiana | Scour Critical — Countermeasures Installed | Fair | 1968 | 571 |
| IROQUOIS RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1979 | 555 |
| SUGAR CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1987 | 550 |
| SALT FORK TANNERS CREEK | Indiana | Scour Critical — Countermeasures Installed | Poor | 1990 | 550 |
| SALT FORK TANNERS CREEK | Indiana | Scour Critical — Countermeasures Installed | Poor | 1950 | 550 |
| SUGAR CREEK | Indiana | Scour Critical — Countermeasures Installed | Good | 1989 | 550 |
| SWAMP CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1938 | 544 |
| ROCK CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1966 | 539 |
| BIG RACCOON Creek | Indiana | Scour Critical — Countermeasures Installed | Fair | 1961 | 536 |
| Branch of Big RACCOON Cr | Indiana | Scour Critical — Countermeasures Installed | Poor | 1958 | 536 |
| SUGAR CREEK | Indiana | Scour Critical — Countermeasures Installed | Poor | 1970 | 530 |
| LITTLE RACCOON CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1968 | 529 |
| YELLOW RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1980 | 527 |
| LEUCK DITCH | Indiana | Scour Critical — Countermeasures Installed | Fair | 1947 | 490 |
| EEL RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1872 | 480 |
| CUP CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1968 | 480 |
| Branch of ROARING Creek | Indiana | Scour Critical — Countermeasures Installed | Poor | 1970 | 471 |
| JONATHAN CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1950 | 467 |
| SUGAR CREEK | Indiana | Scour Critical — Countermeasures Installed | Good | 2012 | 460 |
| RIFE CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1960 | 451 |
| SUGAR CREEK | Indiana | Scour Critical — Countermeasures Installed | Fair | 1975 | 450 |
| RAMP RUN | Indiana | Scour Critical — Countermeasures Installed | Fair | 1935 | 450 |
| FLATROCK RIVER | Indiana | Scour Critical — Countermeasures Installed | Fair | 1900 | 444 |
| MISSISSINEWA RIVER | Indiana | Scour Critical — Countermeasures Installed | Good | 1993 | 440 |
| MAIDEN RUN | Indiana | Scour Critical — Countermeasures Installed | Poor | 1920 | 430 |
| BRANCH OF WHITE LICK CR | Indiana | Scour Critical — Countermeasures Installed | Fair | 1920 | 425 |
| W FORK OF BIG WALNUT CR | Indiana | Scour Critical — Countermeasures Installed | Fair | 1935 | 425 |
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.