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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
BEARSKIN CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1932 3,642
SHANK CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1932 3,200
ONION RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1936 3,100
DE NEVEU CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1965 3,100
BR CEDAR CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1940 3,100
MUSKEGO CANAL Wisconsin Scour Critical — Countermeasures Installed Fair 1925 3,100
BUTLER DITCH Wisconsin Scour Critical — Countermeasures Installed Fair 1924 2,900
DUNCAN CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1934 2,855
PUCHYAN RIVER Wisconsin Scour Critical — Countermeasures Installed Poor 1929 2,769
BR YELLOW RIVER Wisconsin Scour Critical — Countermeasures Installed Poor 1936 2,700
OTTER CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1920 2,700
MOSHER CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1950 2,616
BR BEAR CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1917 2,600
BLACK RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1964 2,600
E BR FOND DU LAC RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1981 2,500
SPRING BROOK Wisconsin Scour Critical — Countermeasures Installed Fair 1935 2,500
DE NEVEU CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1961 2,500
LITTLE LEMONWEIR RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1931 2,500
BR DUCK CREEK Wisconsin Scour Critical — Countermeasures Installed Good 1957 2,500
CAMBRA CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1966 2,500
KILLSNAKE RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1969 2,400
W BR FOND DU LAC RIVER Wisconsin Scour Critical — Countermeasures Installed Poor 1962 2,400
ONION RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1920 2,400
TAINTER LAKE Wisconsin Scour Critical — Countermeasures Installed Poor 1935 2,234
BR W FK LITTLE RIB RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1923 2,200
ASHIPPUN RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1973 2,100
S BR MANITOWOC RIVER Wisconsin Scour Critical — Countermeasures Installed Poor 1927 1,997
E BR FOND DU LAC RIVER Wisconsin Scour Critical — Countermeasures Installed Poor 1965 1,900
N BR PIKE RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1953 1,900
CHETEK RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1929 1,900
UNDERWOOD CREEK Wisconsin Scour Critical — Countermeasures Installed Good 1970 1,900
E BR FOND DU LAC RIVER Wisconsin Scour Critical — Countermeasures Installed Poor 1968 1,900
HONEY CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1949 1,900
SPRING BROOK Wisconsin Scour Critical — Countermeasures Installed Fair 1966 1,803
OAK CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1931 1,762
ROOT RIVER Wisconsin Scour Critical — Countermeasures Installed Poor 1967 1,762
LITTLE PESHTIGO RIVER Wisconsin Scour Critical — Countermeasures Installed Poor 1920 1,700
SPRING BROOK Wisconsin Scour Critical — Countermeasures Installed Poor 1935 1,699
ST LOUIS RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1919 1,650
MILWAUKEE RIVER Wisconsin Scour Critical — Countermeasures Installed Poor 1940 1,650
BRIDGE CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1959 1,646
BR ROSS CROSSING CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1957 1,600
PUCKYAN RIVER Wisconsin Scour Critical — Countermeasures Installed Poor 1929 1,600
S BR YELLOW RIVER Wisconsin Scour Critical — Countermeasures Installed Good 1950 1,600
APPLE RIVER Wisconsin Scour Critical — Countermeasures Installed Poor 1952 1,600
WILLOW CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 2004 1,500
DELAVAN LAKE Wisconsin Scour Critical — Countermeasures Installed Fair 1960 1,500
KOSHKONONG CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1914 1,500
E BR LT EAU PLEINE RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1941 1,465
W BR LT EAU PLEINE RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1930 1,465

Scour Critical Rating Codes

Code 2 — UnaddressedBridge is scour critical with no countermeasures installed. The foundation is vulnerable and no protective action has been taken.
Code 3 — Countermeasures InstalledProtective measures (riprap, sheet piling, etc.) have been installed to reduce scour risk, but the bridge remains classified as scour critical.
Code 6 — Countermeasures IneffectiveProtective 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.

All Bridges Poor Condition Historic Bridges Bridge Stats