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
OTTER CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1964 1,461
MEEME RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1932 1,400
BR CEDAR CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1956 1,391
YELLOW RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1972 1,300
MCCASLIN BROOK Wisconsin Scour Critical — Countermeasures Installed Good 1938 1,200
SPRING CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1930 1,175
PINE RIVER WATERSHED Wisconsin Scour Critical — Countermeasures Installed Good 1992 1,125
LITTLE RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1923 1,100
N BR PIKE RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1931 1,100
MILLER CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1958 1,100
HONEY CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1977 1,100
HELEN CREEK Wisconsin Scour Critical — Countermeasures Installed Good 1941 1,087
CHAIN ECHO CHANNEL Wisconsin Scour Critical — Countermeasures Installed Fair 1976 1,074
MULLET RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1936 1,040
SORENSON CREEK Wisconsin Scour Critical — Countermeasures Installed Good 2005 1,000
E BR FOND DU LAC RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1982 1,000
LITTLE OTTER CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1935 975
FISHERMAN CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1952 940
OCONOMOWOC RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1964 940
FURNACE BRANCH Wisconsin Scour Critical — Countermeasures Installed Fair 1965 940
BEARPEN COULEE CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1930 925
BARK RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1930 910
CASTLE ROCK FLOWAGE Wisconsin Scour Critical — Countermeasures Installed Fair 1982 904
BUTLER CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1949 880
LAU CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1923 880
HONEY CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1933 860
BR HONEY CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1953 860
PRATT CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1925 822
GRAND RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1975 820
N BR MILWAUKEE RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1951 799
SCHOOLHOUSE CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1929 793
DODGE BRANCH Wisconsin Scour Critical — Countermeasures Installed Fair 1930 790
NEBAGAMON CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1969 790
MULLET RIVER Wisconsin Scour Critical — Countermeasures Installed Poor 1920 790
CLEAR CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1957 770
BEAVER CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1968 763
CATTAIL VALLEY CREEK Wisconsin Scour Critical — Countermeasures Installed Good 2020 750
N BR MILWAUKEE RIVER Wisconsin Scour Critical — Countermeasures Installed Poor 1978 750
EIGHT MILE CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1954 730
WAPOGASSET BRANCH Wisconsin Scour Critical — Countermeasures Installed Poor 1920 720
S FK HAY CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1938 719
LITTLE EAU PLEINE RIVER Wisconsin Scour Critical — Countermeasures Installed Good 2020 672
DES PLAINES RIVER Wisconsin Scour Critical — Countermeasures Installed Fair 1950 650
MILL CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1930 650
BR COON CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1927 650
DE NEVEU CREEK Wisconsin Scour Critical — Countermeasures Installed Poor 1926 650
RHEINGAN CREEK Wisconsin Scour Critical — Countermeasures Installed Good 2020 640
DUTCH GAP CANAL Wisconsin Scour Critical — Countermeasures Installed Fair 1960 640
PINE CREEK Wisconsin Scour Critical — Countermeasures Installed Fair 1900 640
BR BIG RIB RIVER Wisconsin Scour Critical — Countermeasures Installed Poor 1938 634

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.