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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
E BR FOX RIVER Michigan Scour Critical — Countermeasures Installed Fair 1953 406
HICKORY CREEK Michigan Scour Critical — Countermeasures Installed Poor 1977 400
MIDDLE ROUGE RIVER Michigan Scour Critical — Countermeasures Installed Poor 1931 400
HURON RIVER Michigan Scour Critical — Countermeasures Installed Good 1989 400
SANDSTONE CREEK Michigan Scour Critical — Countermeasures Installed Poor 1939 396
MIDDLE BR ONTONAGON RIV Michigan Scour Critical — Countermeasures Installed Poor 1919 395
LITTLE INDIAN RIVER Michigan Scour Critical — Countermeasures Installed Good 1947 394
PINNEBOG RIVER Michigan Scour Critical — Countermeasures Installed Poor 1959 390
ALLEN EXTN DRAIN Michigan Scour Critical — Countermeasures Installed Fair 1965 390
MONTREAL RIVER Michigan Scour Critical — Countermeasures Installed Fair 1928 388
SOUTH BR HOG CREEK Michigan Scour Critical — Countermeasures Installed Fair 1963 380
W GIBRALTAR WATERWAY Michigan Scour Critical — Countermeasures Installed Poor 1990 380
MUDDY CREEK Michigan Scour Critical — Countermeasures Installed Fair 1927 380
KEARSLEY CREEK Michigan Scour Critical — Countermeasures Installed Fair 1929 375
EVANSBRANCHOFROUGE Michigan Scour Critical — Countermeasures Installed Fair 1987 370
BUTTERNUT CREEK Michigan Scour Critical — Countermeasures Installed Poor 1926 366
RIFLE RIVER Michigan Scour Critical — Countermeasures Installed Good 1980 366
BRENT RUN Michigan Scour Critical — Countermeasures Installed Fair 1925 364
PINCONNING RIVER Michigan Scour Critical — Countermeasures Installed Good 1990 361
OTTER CREEK Michigan Scour Critical — Countermeasures Installed Poor 1964 360
BIRD CREEK Michigan Scour Critical — Countermeasures Installed Fair 1951 353
SHEBEON DRAIN Michigan Scour Critical — Countermeasures Installed Poor 1984 350
BUTTERNUT CREEK Michigan Scour Critical — Countermeasures Installed Poor 1930 346
STONY CREEK Michigan Scour Critical — Countermeasures Installed Poor 1967 346
ALLEN EXTN DRAIN Michigan Scour Critical — Countermeasures Installed Good 1979 345
ALLEN EXTN DRAIN Michigan Scour Critical — Countermeasures Installed Fair 1979 345
WESTON DRAIN EXTENSION Michigan Scour Critical — Countermeasures Installed Fair 1945 345
BLACK RIVER Michigan Scour Critical — Countermeasures Installed Fair 1980 340
SUCKER CREEK Michigan Scour Critical — Countermeasures Installed Fair 1935 335
BRENT CREEK Michigan Scour Critical — Countermeasures Installed Fair 1926 334
ALLEN EXTN DRAIN Michigan Scour Critical — Countermeasures Installed Fair 1979 330
LITTLE BLACK RIVER Michigan Scour Critical — Countermeasures Installed Poor 1934 329
KEARSLEY CREEK Michigan Scour Critical — Countermeasures Installed Fair 1930 328
STURGEON RIVER Michigan Scour Critical — Countermeasures Installed Fair 1923 327
INDIAN CREEK Michigan Scour Critical — Countermeasures Installed Poor 1979 323
M BR BLACK RIVER Michigan Scour Critical — Countermeasures Installed Good 1969 320
SWAN CREEK Michigan Scour Critical — Countermeasures Installed Poor 1952 319
KEARSLEY CREEK Michigan Scour Critical — Countermeasures Installed Poor 1934 315
KEMP I/C DRAIN Michigan Scour Critical — Countermeasures Installed Fair 1925 315
BLACK RIVER Michigan Scour Critical — Countermeasures Installed Fair 1998 312
SWAN CREEK Michigan Scour Critical — Countermeasures Installed Fair 1987 311
UNION AND STATE LINE DR Michigan Scour Critical — Countermeasures Installed Fair 1983 310
WOLF CREEK Michigan Scour Critical — Countermeasures Installed Good 1960 300
SALT SLANG GLOEDE DRAIN Michigan Scour Critical — Countermeasures Installed Fair 1972 300
MILL CREEK Michigan Scour Critical — Countermeasures Installed Fair 1950 300
EAST BRANCH AUGRES RIVER Michigan Scour Critical — Countermeasures Installed Fair 1979 300
NELSON CREEK Michigan Scour Critical — Countermeasures Installed Poor 1935 300
GUN RIVER Michigan Scour Critical — Countermeasures Installed Fair 1981 296
LITTLE RIVER Michigan Scour Critical — Countermeasures Installed Poor 1928 292
MCCLELLAN RUN Michigan Scour Critical — Countermeasures Installed Good 1987 290

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