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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
M BR EMBARRASS RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1978 235
ARKANSAW CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1933 233
ARKANSAW CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1933 233
CLEAR CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1969 230
S BR PIGEON RIVER Wisconsin Scour Critical — Countermeasures Installed Poor 1925 220
TRIB. TO MILWAUKEE R Wisconsin Scour Critical — Countermeasures Installed Poor 1930 219
HAY MEADOW CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1922 218
BR RUSH CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1966 217
BR RUSH CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1925 217
SILVER CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1970 215
ONION RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1931 215
BR KILLSNAKE RIVER Wisconsin Scour Critical — Countermeasures Installed Good 1925 211
BR RICHLAND CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1956 211
WILLOW RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1928 210
GRAND RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1963 208
BR BISHOP BRANCH Wisconsin Scour Critical — Countermeasures Installed Fair 1950 205
MULLET RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1972 205
WOOD RIVER Wisconsin Scour Critical — Countermeasures Installed Good 1977 205
BR BISHOP BRANCH Wisconsin Scour Critical — Countermeasures Installed Fair 1925 205
BISHOP BRANCH Wisconsin Scour Critical — Countermeasures Installed Fair 1950 205
N FK BAD AXE RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1976 205
N BR MILWAUKEE RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1932 205
ONION RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1922 205
W BR FOND DU LAC RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1958 205
BR W FK KICKAPOO RIVER Wisconsin Scour Critical — Countermeasures Installed Poor 1925 205
MCCASLIN BROOK Wisconsin Scour Critical — Countermeasures Installed Fair 1923 205
BR CEDAR CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1930 205
PIGEON RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1938 205
UNNAMED TRIBUTARY Wisconsin Scour Critical — Countermeasures Installed Fair 1990 200
BR HEMLOCK CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1917 200
MOOSE EAR CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1914 200
MERRITTS CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1968 200
W BR BIG EAU PLEINE RIVE Wisconsin Scour Critical — Countermeasures Installed Fair 1968 200
PENSAUKEE RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1920 200
ROBBINS CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1936 196
NOISY CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 2001 194
ROCKY RUN CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1973 190
HEMLOCK CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1979 189
LITTLE SOMO RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1929 186
KILLSNAKE RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1924 184
ONEIL CREEK Wisconsin Scour Critical — Countermeasures Installed Good 2021 180
W BR MILWAUKEE RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1923 180
PIGEON CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1938 180
JOHNSTOWN CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1977 180
PELICAN RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1965 179
GALENA RIVER Wisconsin Scour Critical — Countermeasures Installed Poor 1965 176
WOOD BRANCH Wisconsin Scour Critical — Countermeasures Installed Fair 1966 176
GALENA RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1969 176
YELLOWSTONE RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1971 176
GALENA RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1970 176

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