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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
CHANNEL BETW LAKE & RIVR Michigan Scour Critical — Unaddressed Poor 1974 6,400
HIGHBANK CREEK Michigan Scour Critical — Unaddressed Poor 1950 1,690
BELLEVILLE LK HURON RIVR Michigan Scour Critical — Unaddressed Poor 1947 1,610
NOTTAWASSEPEE CREEK Michigan Scour Critical — Unaddressed Poor 1976 459
MIDDLE ROUGE RIVER Michigan Scour Critical — Unaddressed Poor 1945 400
NORTH BR TOBACCO RIVER Michigan Scour Critical — Unaddressed Poor 1939 280
NORTH BR SALT RIVER Michigan Scour Critical — Unaddressed Poor 1937 185
IRON CREEK Michigan Scour Critical — Unaddressed Poor 1960 138
MILL CREEK Michigan Scour Critical — Unaddressed Poor 1962 97
SWAN CREEK Michigan Scour Critical — Unaddressed Fair 1976 70
N BR W BR ESCANABA R Michigan Scour Critical — Unaddressed Poor 1928 67
GALIEN RIVER Michigan Scour Critical — Unaddressed Poor 1930 36
E BR ST JOSEPH OF MAUMEE Michigan Scour Critical — Unaddressed Poor 1910 22
SAWMILL CREEK Michigan Scour Critical — Unaddressed Poor 1985 10
PAINT CREEK Michigan Scour Critical — Countermeasures Ineffective Good 2024 10,078
FISHDAM RIVER Michigan Scour Critical — Countermeasures Ineffective Good 2023 50
INDIAN RIVER Michigan Scour Critical — Countermeasures Ineffective Good 2023 50
CARP RIVER Michigan Scour Critical — Countermeasures Ineffective Good 2024 50
TRENTON CHANNEL Michigan Scour Critical — Countermeasures Ineffective Fair 1913 —
LOOKING GLASS RIVER Michigan Scour Critical — Countermeasures Installed Fair 1961 192,000
LOOKING GLASS RIVER Michigan Scour Critical — Countermeasures Installed Fair 1961 192,000
ROUGE RIVER Michigan Scour Critical — Countermeasures Installed Good 1970 164,804
HURON RIVER Michigan Scour Critical — Countermeasures Installed Fair 1971 102,776
FERDUN CREEK Michigan Scour Critical — Countermeasures Installed Fair 1957 88,500
CONRAIL RAISIN R FRONT Michigan Scour Critical — Countermeasures Installed Poor 1955 67,800
SWARTZ CREEK Michigan Scour Critical — Countermeasures Installed Fair 1954 66,912
GILKEY CREEK Michigan Scour Critical — Countermeasures Installed Fair 1976 63,400
MDOT RR COR & HURON RVR Michigan Scour Critical — Countermeasures Installed Fair 1956 59,888
THREAD CREEK Michigan Scour Critical — Countermeasures Installed Fair 1971 59,000
ROGUE RIVER Michigan Scour Critical — Countermeasures Installed Fair 1969 58,420
ROUGE RIVER Michigan Scour Critical — Countermeasures Installed Fair 1967 57,795
ROUGE RIVER Michigan Scour Critical — Countermeasures Installed Good 2024 56,238
CASS RIVER Michigan Scour Critical — Countermeasures Installed Good 1961 56,192
FLINT R W BLVD&R SIDE DR Michigan Scour Critical — Countermeasures Installed Fair 1976 56,000
BEAVER CREEK Michigan Scour Critical — Countermeasures Installed Good 1964 55,558
CLINTON RIVER N&S RDS Michigan Scour Critical — Countermeasures Installed Fair 1947 49,601
CLINTON RIVER N&S RDS Michigan Scour Critical — Countermeasures Installed Fair 1963 49,601
INDIAN CREEK Michigan Scour Critical — Countermeasures Installed Fair 1961 43,502
TONQUISH CREEK Michigan Scour Critical — Countermeasures Installed Poor 1958 40,380
MDOT RR COR & HURON RVR Michigan Scour Critical — Countermeasures Installed Fair 1962 37,373
MDOT RR COR & HURON RVR Michigan Scour Critical — Countermeasures Installed Fair 1962 37,373
BR OF SAND CREEK Michigan Scour Critical — Countermeasures Installed Good 1961 36,338
CLINTON R Michigan Scour Critical — Countermeasures Installed Fair 1929 36,241
SWARTZ CREEK Michigan Scour Critical — Countermeasures Installed Poor 1969 33,600
GRAND RIVER Michigan Scour Critical — Countermeasures Installed Fair 1929 33,588
MILL CREEK Michigan Scour Critical — Countermeasures Installed Fair 1961 33,463
MILL CREEK Michigan Scour Critical — Countermeasures Installed Fair 1961 33,463
S CHANNEL GRAND RIVER Michigan Scour Critical — Countermeasures Installed Fair 1931 33,375
S CHANNEL GRAND RIVER Michigan Scour Critical — Countermeasures Installed Fair 1957 33,375
TONQUISH CREEK Michigan Scour Critical — Countermeasures Installed Fair 1926 32,679

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