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.

Clear

Bridge	State	Scour Status	Condition	Year Built	ADT
GRIFFY CREEK	Indiana	Scour Critical — Countermeasures Installed	Fair	1972	10,184
ST MARYS RIVER	Indiana	Scour Critical — Countermeasures Installed	Fair	1981	10,100
ST MARYS RIVER	Indiana	Scour Critical — Countermeasures Installed	Poor	1981	10,100
HOUK DITCH	Indiana	Scour Critical — Countermeasures Installed	Fair	1988	10,057
WEST FORK BIG WALNUT CR	Indiana	Scour Critical — Countermeasures Installed	Fair	1963	10,041
WEST FORK BIG WALNUT CR	Indiana	Scour Critical — Countermeasures Installed	Fair	1963	10,041
MISSISSINEWA RIVER	Indiana	Scour Critical — Countermeasures Installed	Fair	1950	10,000
CANARY DITCH	Indiana	Scour Critical — Countermeasures Installed	Fair	2000	9,905
ST MARYS RIVER	Indiana	Scour Critical — Countermeasures Installed	Fair	1969	9,815
KOLB CREEK	Indiana	Scour Critical — Countermeasures Installed	Fair	1950	9,690
BEAL-TAYLOR DITCH	Indiana	Scour Critical — Countermeasures Installed	Fair	1978	9,672
CYPRESS CREEK	Indiana	Scour Critical — Countermeasures Installed	Fair	1969	9,600
PLEASANT RUN	Indiana	Scour Critical — Countermeasures Installed	Fair	1920	9,543
SAND CREEK	Indiana	Scour Critical — Countermeasures Installed	Good	1994	9,349
WHITE RIVER	Indiana	Scour Critical — Countermeasures Installed	Poor	1973	9,340
WHITE RIVER	Indiana	Scour Critical — Countermeasures Installed	Good	1971	9,270
LAURAMIE CREEK	Indiana	Scour Critical — Countermeasures Installed	Fair	1925	9,205
LITTLE EAGLE CREEK	Indiana	Scour Critical — Countermeasures Installed	Fair	1977	8,956
MIDDLE CREEK	Indiana	Scour Critical — Countermeasures Installed	Fair	1940	8,918
CLEAR CREEK	Indiana	Scour Critical — Countermeasures Installed	Fair	1972	8,790
CLEAR CREEK	Indiana	Scour Critical — Countermeasures Installed	Fair	1972	8,720
LITTLE SUGAR CREEK	Indiana	Scour Critical — Countermeasures Installed	Good	1964	8,700
LITTLE DUCK CREEK	Indiana	Scour Critical — Countermeasures Installed	Fair	1986	8,673
BRANDYWINE CREEK	Indiana	Scour Critical — Countermeasures Installed	Fair	1942	8,593
LITTLE BRANDYWINE CREEK	Indiana	Scour Critical — Countermeasures Installed	Fair	1921	8,593
PLUM CREEK	Indiana	Scour Critical — Countermeasures Installed	Fair	1970	8,539
PLUM CREEK	Indiana	Scour Critical — Countermeasures Installed	Fair	1970	8,539
HOUK DITCH	Indiana	Scour Critical — Countermeasures Installed	Good	1988	8,521
JOHNSON BRANCH	Indiana	Scour Critical — Countermeasures Installed	Good	1940	8,470
W FORK LTL WILDCAT CR	Indiana	Scour Critical — Countermeasures Installed	Fair	1986	8,417
MIDDLE FORK BLUE RIVER	Indiana	Scour Critical — Countermeasures Installed	Fair	1947	8,309
SILVER CREEK	Indiana	Scour Critical — Countermeasures Installed	Good	1986	8,166
BOOTS CREEK	Indiana	Scour Critical — Countermeasures Installed	Fair	1926	7,943
CICERO CREEK (MORSE RES)	Indiana	Scour Critical — Countermeasures Installed	Fair	1953	7,800
EAST FORK WHITE RIVER	Indiana	Scour Critical — Countermeasures Installed	Fair	1941	7,762
E FK WHITE RIVER OVFL	Indiana	Scour Critical — Countermeasures Installed	Fair	1984	7,762
DENIOS CREEK	Indiana	Scour Critical — Countermeasures Installed	Fair	1963	7,726
BLUE CREEK	Indiana	Scour Critical — Countermeasures Installed	Good	1964	7,703
M FORK WILDCAT CREEK	Indiana	Scour Critical — Countermeasures Installed	Good	1990	7,510
FINLEY CREEK	Indiana	Scour Critical — Countermeasures Installed	Poor	1958	7,502
DRAINAGE DITCH	Indiana	Scour Critical — Countermeasures Installed	Fair	1930	7,495
MISSISSINEWA RIVER	Indiana	Scour Critical — Countermeasures Installed	Poor	1910	7,460
ST JOSEPH RIVER	Indiana	Scour Critical — Countermeasures Installed	Good	1970	7,436
HONEY CREEK	Indiana	Scour Critical — Countermeasures Installed	Fair	1936	7,419
BIG OX CREEK	Indiana	Scour Critical — Countermeasures Installed	Good	1995	7,352
LITTLE SAND CREEK	Indiana	Scour Critical — Countermeasures Installed	Fair	1972	7,285
BIG BLUE RIVER	Indiana	Scour Critical — Countermeasures Installed	Fair	1943	7,059
BOOTS CREEK	Indiana	Scour Critical — Countermeasures Installed	Good	1994	7,055
BIG EAGLE CREEK	Indiana	Scour Critical — Countermeasures Installed	Good	1993	7,040
E FORK WHITEWATER RIVER	Indiana	Scour Critical — Countermeasures Installed	Fair	1992	6,960

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.

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