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
MARKET AVE & GRAND RIVER	Michigan	Scour Critical — Countermeasures Installed	Fair	1963	32,500
MARKET AVE & GRAND RIVER	Michigan	Scour Critical — Countermeasures Installed	Fair	1963	32,500
PLUM CREEK	Michigan	Scour Critical — Countermeasures Installed	Fair	1955	31,883
PLUM CREEK	Michigan	Scour Critical — Countermeasures Installed	Fair	1955	31,883
MIDDLE BR CLINTON RIVER	Michigan	Scour Critical — Countermeasures Installed	Good	1996	31,800
BLACK CREEK	Michigan	Scour Critical — Countermeasures Installed	Fair	1949	31,322
RUSH CREEK	Michigan	Scour Critical — Countermeasures Installed	Fair	1933	31,311
SYCAMORE CREEK	Michigan	Scour Critical — Countermeasures Installed	Fair	1956	31,200
MIDDLE ROUGE RIVER	Michigan	Scour Critical — Countermeasures Installed	Fair	1930	30,856
PLUM CREEK	Michigan	Scour Critical — Countermeasures Installed	Good	1964	30,475
PLUM CREEK	Michigan	Scour Critical — Countermeasures Installed	Fair	1988	30,475
MILL CREEK	Michigan	Scour Critical — Countermeasures Installed	Fair	1959	30,064
ROUGE RIVER	Michigan	Scour Critical — Countermeasures Installed	Poor	1932	29,650
MIDDLE BR CLINTON RIVER	Michigan	Scour Critical — Countermeasures Installed	Fair	1966	29,646
SEXTON KILFOIL DRAIN	Michigan	Scour Critical — Countermeasures Installed	Good	1986	29,303
SEXTON KILFOIL DRAIN	Michigan	Scour Critical — Countermeasures Installed	Fair	1964	29,303
SPRING LAKE CHANNEL	Michigan	Scour Critical — Countermeasures Installed	Fair	1966	29,125
MILL CREEK	Michigan	Scour Critical — Countermeasures Installed	Fair	1961	28,818
MILL CREEK	Michigan	Scour Critical — Countermeasures Installed	Fair	1961	28,818
BEAR RIVER	Michigan	Scour Critical — Countermeasures Installed	Fair	1930	28,667
PINE RUN CREEK	Michigan	Scour Critical — Countermeasures Installed	Fair	1958	28,043
PINE RUN CREEK	Michigan	Scour Critical — Countermeasures Installed	Fair	1958	28,043
RAISIN RIVER & ELM AVE	Michigan	Scour Critical — Countermeasures Installed	Fair	1988	27,951
BUCK CREEK	Michigan	Scour Critical — Countermeasures Installed	Fair	1986	27,800
MIDDLE ROUGE R	Michigan	Scour Critical — Countermeasures Installed	Good	1959	27,634
MIDDLE ROUGE R	Michigan	Scour Critical — Countermeasures Installed	Good	1959	27,634
MIDDLE BR CLINTON RIVER	Michigan	Scour Critical — Countermeasures Installed	Good	1966	27,631
LAKE LANSING OUTLET	Michigan	Scour Critical — Countermeasures Installed	Fair	1931	27,408
BUCK CR	Michigan	Scour Critical — Countermeasures Installed	Poor	1933	27,400
GRAND RIVER	Michigan	Scour Critical — Countermeasures Installed	Fair	1927	27,197
TITTABAWASSEE RIVER	Michigan	Scour Critical — Countermeasures Installed	Fair	1954	26,627
CASS RIVER	Michigan	Scour Critical — Countermeasures Installed	Fair	1961	25,971
W CHANNEL SAGINAW RIVER	Michigan	Scour Critical — Countermeasures Installed	Fair	1938	25,874
ROUGE RIVER	Michigan	Scour Critical — Countermeasures Installed	Fair	1931	25,704
ROUGE RIVER	Michigan	Scour Critical — Countermeasures Installed	Good	1987	25,704
SWARTZ CREEK	Michigan	Scour Critical — Countermeasures Installed	Fair	1968	25,506
SWARTZ CREEK	Michigan	Scour Critical — Countermeasures Installed	Fair	1968	25,506
BLAKLEY DRAIN	Michigan	Scour Critical — Countermeasures Installed	Fair	1986	24,955
KALAMAZOO RIVER	Michigan	Scour Critical — Countermeasures Installed	Fair	1966	24,600
KALAMAZOO RIVER	Michigan	Scour Critical — Countermeasures Installed	Fair	1964	24,400
KALAMAZOO RIVER	Michigan	Scour Critical — Countermeasures Installed	Good	2024	24,126
ORE CREEK	Michigan	Scour Critical — Countermeasures Installed	Fair	1959	23,661
ORE CREEK	Michigan	Scour Critical — Countermeasures Installed	Fair	1940	23,661
SAGINAW RIVER & JFK DR	Michigan	Scour Critical — Countermeasures Installed	Fair	1958	23,441
BLACK RIVER	Michigan	Scour Critical — Countermeasures Installed	Fair	1949	23,373
BLACK RIVER	Michigan	Scour Critical — Countermeasures Installed	Fair	1958	23,373
SHIAWASSEE RIVER	Michigan	Scour Critical — Countermeasures Installed	Fair	1970	22,689
S BR SHIAWASSEE RIVER	Michigan	Scour Critical — Countermeasures Installed	Fair	1962	22,592
S BR SHIAWASSEE RIVER	Michigan	Scour Critical — Countermeasures Installed	Fair	1962	22,592
SAGINAW RV;MARTIN ST&RR	Michigan	Scour Critical — Countermeasures Installed	Fair	1976	21,832

Scour Critical Rating Codes

Code 2 — Unaddressed	Bridge is scour critical with no countermeasures installed. The foundation is vulnerable and no protective action has been taken.
Code 3 — Countermeasures Installed	Protective measures (riprap, sheet piling, etc.) have been installed to reduce scour risk, but the bridge remains classified as scour critical.
Code 6 — Countermeasures Ineffective	Protective 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