Scour Critical Bridges in Wisconsin

751 bridges in Wisconsin 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 751 bridges in Wisconsin have been identified as vulnerable to scour damage.

Clear

Bridge	State	Scour Status	Condition	Year Built	ADT
BR HAY RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1930	50
CHASE CREEK	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1925	50
WOOD RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1974	50
POPPLE RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1960	50
W. BRANCH OF SUGAR RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Poor	1930	50
BR NIPPERSINK CREEK	Wisconsin	Scour Critical — Countermeasures Installed	Good	2020	50
ROGERS BRANCH	Wisconsin	Scour Critical — Countermeasures Installed	Poor	1910	50
FRENCH CREEK	Wisconsin	Scour Critical — Countermeasures Installed	Poor	1950	50
WARD CREEK	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1953	50
TOTOGATIC RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Poor	1926	50
NIPPERSINK CREEK	Wisconsin	Scour Critical — Countermeasures Installed	Poor	1920	50
HAMAN CREEK	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1974	50
WAUSAUKEE RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Poor	1920	50
BEAR CREEK	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1940	50
N BR OCONTO RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Poor	1928	50
S BR EMBARRASS RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Poor	1910	50
MULLET RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1950	50
ONION RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1960	50
MINK CREEK	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1925	50
MARENGO RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1925	49
NAMEKAGON RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1964	48
SHEBOYGAN RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Poor	1961	48
BR WISCONSIN RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1930	47
DUNLAP CREEK	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1927	47
BR E BR ROCK RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1930	47
BR E BR ROCK RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1974	47
BR GRAND RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Good	1928	47
BEAR CREEK	Wisconsin	Scour Critical — Countermeasures Installed	Good	1965	47
YELLOWSTONE RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1930	47
BR MOUNDS BRANCH	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1955	47
TROTTER BRANCH	Wisconsin	Scour Critical — Countermeasures Installed	Poor	1930	47
MADDEN BRANCH	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1969	47
MADDEN BRANCH	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1969	47
SHULLSBURG BRANCH	Wisconsin	Scour Critical — Countermeasures Installed	Poor	1929	47
SPOFFORD CREEK	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1950	47
BR OTTER CREEK	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1968	47
BISHOP CREEK	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1951	47
TRAPPE RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1960	47
ROOT RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1935	47
BR BEAR CREEK	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1930	47
BR E BR ROCK RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Poor	1927	47
S BR EMBARRASS RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1962	47
SHEBOYGAN RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1970	47
MULLET RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Poor	1919	47
MULLET RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1920	47
ONION RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1935	47
ONION RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Good	1966	47
SILVER CREEK	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1940	47
SILVER CREEK	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1967	47
W FK KICKAPOO RIVER	Wisconsin	Scour Critical — Countermeasures Installed	Fair	1950	47

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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