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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
WHITE RIVER Michigan Scour Critical — Countermeasures Installed Fair 1965 9,550
PINE RIVER Michigan Scour Critical — Countermeasures Installed Fair 1930 9,548
RED CEDAR RIVER Michigan Scour Critical — Countermeasures Installed Good 1972 9,450
BLACK RIVER Michigan Scour Critical — Countermeasures Installed Fair 1991 9,408
WABASIS CREEK Michigan Scour Critical — Countermeasures Installed Fair 1957 9,376
CLINTON RIVER Michigan Scour Critical — Countermeasures Installed Good 1947 9,300
FLINT RIVER Michigan Scour Critical — Countermeasures Installed Fair 1926 9,126
BLACK RIVER Michigan Scour Critical — Countermeasures Installed Fair 1972 9,123
BLACK RIVER Michigan Scour Critical — Countermeasures Installed Fair 1972 9,123
CROCKERY CREEK Michigan Scour Critical — Countermeasures Installed Fair 1961 9,100
CROCKERY CREEK Michigan Scour Critical — Countermeasures Installed Fair 1953 9,100
BIG MEADOW DRAIN Michigan Scour Critical — Countermeasures Installed Fair 1899 9,000
SWARTZ CREEK Michigan Scour Critical — Countermeasures Installed Fair 1981 8,961
AU SABLE RIVER Michigan Scour Critical — Countermeasures Installed Fair 1984 8,950
SHIAWASSEE RIVER Michigan Scour Critical — Countermeasures Installed Fair 1983 8,752
SYCAMORE CREEK Michigan Scour Critical — Countermeasures Installed Fair 1962 8,725
FLINT RIVER Michigan Scour Critical — Countermeasures Installed Fair 1928 8,725
ROUGE RIVER Michigan Scour Critical — Countermeasures Installed Fair 1987 8,706
WOLF CREEK Michigan Scour Critical — Countermeasures Installed Fair 1979 8,701
CHIPPEWA RIVER Michigan Scour Critical — Countermeasures Installed Poor 1961 8,658
CHIPPEWA RIVER Michigan Scour Critical — Countermeasures Installed Fair 1961 8,658
LOW BRANCH ROUGE RIVER Michigan Scour Critical — Countermeasures Installed Fair 1935 8,500
PRAIRIE CREEK Michigan Scour Critical — Countermeasures Installed Poor 1929 8,456
RIFLE RIVER Michigan Scour Critical — Countermeasures Installed Fair 1972 8,450
MILLS CREEK Michigan Scour Critical — Countermeasures Installed Good 2023 8,400
AU SABLE RIVER Michigan Scour Critical — Countermeasures Installed Fair 1972 8,367
N BR CHIPPEWA RIVER Michigan Scour Critical — Countermeasures Installed Fair 1934 8,359
KALAMAZOO RIVER Michigan Scour Critical — Countermeasures Installed Poor 1938 8,300
WHITE FEATHER CREEK Michigan Scour Critical — Countermeasures Installed Fair 1938 8,300
CLINTON RIVER Michigan Scour Critical — Countermeasures Installed Fair 1953 8,263
PLATTE RIVER Michigan Scour Critical — Countermeasures Installed Fair 1927 8,172
AU SABLE RIVER Michigan Scour Critical — Countermeasures Installed Fair 1960 8,126
AU SABLE RIVER Michigan Scour Critical — Countermeasures Installed Fair 1960 8,125
HOLLY DRAIN Michigan Scour Critical — Countermeasures Installed Good 1961 8,100
GRAND RIVER Michigan Scour Critical — Countermeasures Installed Fair 1975 8,009
GRAND RIVER Michigan Scour Critical — Countermeasures Installed Fair 1979 7,875
GRAND RIVER Michigan Scour Critical — Countermeasures Installed Fair 1989 7,800
AU GRES RIVER Michigan Scour Critical — Countermeasures Installed Fair 1930 7,728
THREAD RIVER Michigan Scour Critical — Countermeasures Installed Poor 1928 7,716
SAGANING CREEK Michigan Scour Critical — Countermeasures Installed Fair 1937 7,706
S BR PINE RIVER Michigan Scour Critical — Countermeasures Installed Fair 1935 7,706
GRAND RIVER Michigan Scour Critical — Countermeasures Installed Fair 1948 7,600
RAVINES BRANCH OF ROUGE Michigan Scour Critical — Countermeasures Installed Fair 1930 7,595
S BR RAISIN RIVER Michigan Scour Critical — Countermeasures Installed Fair 1934 7,560
TITTABAWASEE RIVER Michigan Scour Critical — Countermeasures Installed Fair 1932 7,544
MUSKEGON RIVER Michigan Scour Critical — Countermeasures Installed Good 1996 7,526
S BR TOBACCO RIVER Michigan Scour Critical — Countermeasures Installed Fair 1935 7,472
KALAMAZOO RIVER Michigan Scour Critical — Countermeasures Installed Fair 1908 7,449
FLEMMING CREEK Michigan Scour Critical — Countermeasures Installed Poor 1981 7,431
PARIS CREEK Michigan Scour Critical — Countermeasures Installed Fair 1929 7,428

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