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 LIGHTNING CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1920 25
TROUT CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1929 25
SILVER CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1970 25
BR MISSOURI CR Wisconsin Scour Critical — Countermeasures Installed Fair 1950 25
BR CRANBERRY CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1910 25
NAMEKAGON RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1928 24
ROARING CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1940 24
E BR BIG SANDY CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1907 24
BR BIG RIB RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1938 24
BR RICHLAND CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1927 23
RUBICON RIVER Wisconsin Scour Critical — Countermeasures Installed Good 1970 23
APPLE BRANCH Wisconsin Scour Critical — Countermeasures Installed Fair 1964 23
BR OTTER CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1936 23
BR CHERRY CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1934 23
S FK COPPER RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1920 23
BIG SANDY CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1929 23
DEER TAIL CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1940 23
POTATO RIVER Wisconsin Scour Critical — Countermeasures Installed Good 2018 22
BRULE RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1930 22
BALDWIN CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1946 22
LITTLE THORNAPPLE RIVER Wisconsin Scour Critical — Countermeasures Installed Poor 1940 22
JOHNSON CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1938 21
BR WAUMANDEE CREEK Wisconsin Scour Critical — Countermeasures Installed Good 2022 20
BRANCH DEVILS RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1960 20
SCOTCH CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1962 20
W BR RED RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1920 20
LYGA VALLEY CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1935 18
S BR OCONTO RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1921 17
BIG HAY MEADOW CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1936 15
CARR VALLEY BRANCH Wisconsin Scour Critical — Countermeasures Installed Fair 1990 15
BR PLUM CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1929 15
BIG HAY MEADOW CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1922 14
YELLOW RIVER OVERFLOW Wisconsin Scour Critical — Countermeasures Installed Fair 1930 13
E BR BIG SANDY CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1966 13
N FK SPIRIT RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1924 13
SILVER CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1950 11
BR BADGER MILL CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1901 10
GALENA RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1917 10
BR PECATONICA RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1952 10
DRY RUN Wisconsin Scour Critical — Countermeasures Installed Fair 1921 10
BALDWIN CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1930 7
EVERGREEN CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1916 6
COMET CREEK Wisconsin Scour Critical — Countermeasures Installed Good 1928 6
OTTER CREEK Wisconsin Scour Critical — Countermeasures Installed Good 2015 5
BRENNAN CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1930 5
SILVER CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1935 5
BOIS BRULE RIVER Wisconsin Scour Critical — Countermeasures Installed Poor 1929 1
W BR FOND DU LAC RIVER Wisconsin Scour Critical — Countermeasures Installed Poor 1927 1
SKANAWAN CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1935 1
MENOMONEE RIVER Wisconsin Scour Critical — Countermeasures Installed Poor 1976 1

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.