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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
SEBEWA CREEK Michigan Scour Critical — Countermeasures Installed Fair 2000 74
BASS LAKE DRAIN Michigan Scour Critical — Countermeasures Installed Poor 1910 72
NORTHWOOD DRAIN Michigan Scour Critical — Countermeasures Installed Poor 1926 67
STONY CREEK Michigan Scour Critical — Countermeasures Installed Fair 1920 65
N BR OF BLACK RIVER Michigan Scour Critical — Countermeasures Installed Good 1987 64
BAD CREEK Michigan Scour Critical — Countermeasures Installed Poor 1920 64
NOTTAWA CREEK Michigan Scour Critical — Countermeasures Installed Poor 1918 61
MUD CREEK Michigan Scour Critical — Countermeasures Installed Fair 1930 60
NORTH MACON CREEK Michigan Scour Critical — Countermeasures Installed Fair 1987 60
TAMARACK CREEK Michigan Scour Critical — Countermeasures Installed Poor 1998 57
GRIFFUS CREEK Michigan Scour Critical — Countermeasures Installed Fair 1987 57
DOWAGIAC RIVER Michigan Scour Critical — Countermeasures Installed Poor 1930 56
SWARTZ CREEK Michigan Scour Critical — Countermeasures Installed Good 1957 56
BOVEE DRAIN Michigan Scour Critical — Countermeasures Installed Poor 1900 56
PONY CREEK Michigan Scour Critical — Countermeasures Installed Poor 1939 56
INDIAN CREEK DRAIN Michigan Scour Critical — Countermeasures Installed Poor 1976 55
OCHA CREEK Michigan Scour Critical — Countermeasures Installed Fair 1985 52
WEEKS DRAIN Michigan Scour Critical — Countermeasures Installed Poor 1930 51
JO DRAIN Michigan Scour Critical — Countermeasures Installed Poor 1938 51
STONEY CREEK Michigan Scour Critical — Countermeasures Installed Poor 1984 50
CHARLOTTE RIVER Michigan Scour Critical — Countermeasures Installed Poor 1907 50
NEWTON DRAIN Michigan Scour Critical — Countermeasures Installed Poor 1920 50
ROCK FALLS CREEK Michigan Scour Critical — Countermeasures Installed Fair 1971 50
SANDSTONE CREEK Michigan Scour Critical — Countermeasures Installed Fair 1990 50
BIG CEDAR RIVER Michigan Scour Critical — Countermeasures Installed Fair 1928 50
SWAMP RAISIN CREEK Michigan Scour Critical — Countermeasures Installed Poor 1930 50
VANDERVENTER DRAIN Michigan Scour Critical — Countermeasures Installed Fair 1973 50
SUCKER CREEK DRAIN Michigan Scour Critical — Countermeasures Installed Good 1983 50
BIG SAUBLE RIVER Michigan Scour Critical — Countermeasures Installed Poor 1960 49
MORRIS DRAIN Michigan Scour Critical — Countermeasures Installed Poor 1924 47
MALLORY LAKE DRAIN Michigan Scour Critical — Countermeasures Installed Poor 1910 46
SILVER CREEK Michigan Scour Critical — Countermeasures Installed Poor 1910 44
NOTTAWA CREEK Michigan Scour Critical — Countermeasures Installed Poor 1919 43
GIBSON DRAIN Michigan Scour Critical — Countermeasures Installed Fair 1979 43
E BRANCH ESCANABA RIVER Michigan Scour Critical — Countermeasures Installed Poor 1925 40
W BRANCH CHOCOLAY RIVER Michigan Scour Critical — Countermeasures Installed Fair 1929 40
NELSON CREEK Michigan Scour Critical — Countermeasures Installed Fair 1930 40
TYRE I/C DRAIN EXT Michigan Scour Critical — Countermeasures Installed Poor 1974 40
LITTLE RIVER Michigan Scour Critical — Countermeasures Installed Poor 1928 39
NILE DRAIN Michigan Scour Critical — Countermeasures Installed Fair 1982 38
LAIRD CREEK Michigan Scour Critical — Countermeasures Installed Poor 1920 37
MACON - MILAN DRAIN Michigan Scour Critical — Countermeasures Installed Fair 1968 37
BIG CREEK A DRAIN Michigan Scour Critical — Countermeasures Installed Poor 1917 30
TEKONSHA CREEK&POWERS Michigan Scour Critical — Countermeasures Installed Poor 1900 30
WILSON CREEK Michigan Scour Critical — Countermeasures Installed Fair 1935 30
TROUT FALLS CREEK Michigan Scour Critical — Countermeasures Installed Good 1935 30
CEDAR RIVER Michigan Scour Critical — Countermeasures Installed Fair 1976 30
NORTH MACON CREEK Michigan Scour Critical — Countermeasures Installed Poor 1910 30
LITTLE TROUT RIVER Michigan Scour Critical — Countermeasures Installed Poor 1930 30
DOWAGIAC RIVER Michigan Scour Critical — Countermeasures Installed Poor 1930 26

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