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Scour Critical Bridges in Michigan

1,081 bridges in Michigan 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 1,081 bridges in Michigan have been identified as vulnerable to scour damage.

Clear
Bridge State Scour Status Condition Year Built ADT
BEAVER CREEK Michigan Scour Critical — Countermeasures Installed Fair 1950 1,956
SOUTH BRANCH WHITE RIVER Michigan Scour Critical — Countermeasures Installed Fair 1950 1,950
BEEBE CREEK Michigan Scour Critical — Countermeasures Installed Fair 1930 1,927
RIVER RAISIN Michigan Scour Critical — Countermeasures Installed Poor 1963 1,920
WEEKS DRAIN Michigan Scour Critical — Countermeasures Installed Poor 1980 1,896
THUNDER BAY RIVER Michigan Scour Critical — Countermeasures Installed Poor 1953 1,861
LITTLE THORNAPPLE RIVER Michigan Scour Critical — Countermeasures Installed Fair 1957 1,860
WAPATO CREEK Michigan Scour Critical — Countermeasures Installed Poor 1938 1,845
MUD CREEK Michigan Scour Critical — Countermeasures Installed Good 1957 1,845
SWARTZ CREEK Michigan Scour Critical — Countermeasures Installed Poor 1919 1,798
PORTER CREEK Michigan Scour Critical — Countermeasures Installed Fair 1956 1,789
CEDAR CREEK Michigan Scour Critical — Countermeasures Installed Fair 1949 1,767
E BR FOX RIVER Michigan Scour Critical — Countermeasures Installed Fair 1989 1,763
MISTEGUAY CREEK Michigan Scour Critical — Countermeasures Installed Poor 1947 1,752
W.BR.SWARTZCREEK Michigan Scour Critical — Countermeasures Installed Fair 1938 1,736
MIDDLE BR CASS RIVER Michigan Scour Critical — Countermeasures Installed Fair 1952 1,718
BR CASS RIVER Michigan Scour Critical — Countermeasures Installed Fair 1952 1,718
BR ONTONAGON RIVER CISCO Michigan Scour Critical — Countermeasures Installed Fair 1964 1,713
BIG POTATO CREEK Michigan Scour Critical — Countermeasures Installed Fair 1956 1,669
PAINT CREEK Michigan Scour Critical — Countermeasures Installed Fair 1965 1,662
LWR S BR THUNDER BAY RIV Michigan Scour Critical — Countermeasures Installed Fair 1948 1,650
SHIAWASSEE RIVER Michigan Scour Critical — Countermeasures Installed Good 1924 1,618
ELK CREEK DRAIN Michigan Scour Critical — Countermeasures Installed Fair 1960 1,600
CASS RIVER Michigan Scour Critical — Countermeasures Installed Fair 1982 1,600
N BR CEDAR RIVER Michigan Scour Critical — Countermeasures Installed Fair 1923 1,596
SARGENT CREEK Michigan Scour Critical — Countermeasures Installed Good 1965 1,589
MICHIGAMME RIVER Michigan Scour Critical — Countermeasures Installed Poor 1931 1,571
TROUT RIVER Michigan Scour Critical — Countermeasures Installed Fair 1956 1,564
STONY CREEK Michigan Scour Critical — Countermeasures Installed Poor 1982 1,550
AU SABLE RIVER Michigan Scour Critical — Countermeasures Installed Fair 1949 1,543
LOOKINGGLASS RIVER Michigan Scour Critical — Countermeasures Installed Good 1952 1,534
DEER CREEK Michigan Scour Critical — Countermeasures Installed Poor 1920 1,528
TAFT DRAIN Michigan Scour Critical — Countermeasures Installed Fair 1921 1,520
BLACK RIVER Michigan Scour Critical — Countermeasures Installed Fair 1929 1,500
MIDDLE BRANCH RIVER Michigan Scour Critical — Countermeasures Installed Fair 1939 1,485
TAWAS RIVER Michigan Scour Critical — Countermeasures Installed Fair 1981 1,480
CARLETON CREEK Michigan Scour Critical — Countermeasures Installed Fair 1937 1,470
ARMSTRONG CREEK Michigan Scour Critical — Countermeasures Installed Fair 1930 1,463
LOWER RIVER ROUGE Michigan Scour Critical — Countermeasures Installed Fair 1947 1,450
GOODING CREEK Michigan Scour Critical — Countermeasures Installed Good 1987 1,440
BLUFF CREEK Michigan Scour Critical — Countermeasures Installed Poor 1930 1,430
ST JOSEPH RIVER Michigan Scour Critical — Countermeasures Installed Fair 1974 1,426
NORTH BR CHIPPEWA RIVER Michigan Scour Critical — Countermeasures Installed Poor 1934 1,420
CLAM LAKE Michigan Scour Critical — Countermeasures Installed Fair 1958 1,400
E. BR. PINNEBOG RIVER Michigan Scour Critical — Countermeasures Installed Fair 1976 1,390
EAST POND CREEK Michigan Scour Critical — Countermeasures Installed Poor 1955 1,380
TAWAS RIVER Michigan Scour Critical — Countermeasures Installed Fair 1972 1,380
SUCKER CREEK DRAIN Michigan Scour Critical — Countermeasures Installed Fair 1960 1,375
W BR ST JOSEPH OF MAUMEE Michigan Scour Critical — Countermeasures Installed Good 2024 1,349
NORTH MACON CREEK Michigan Scour Critical — Countermeasures Installed Good 1948 1,330

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