Scour Critical Bridges in North Dakota

102 bridges in North Dakota 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 102 bridges in North Dakota have been identified as vulnerable to scour damage.

Clear

Bridge	State	Scour Status	Condition	Year Built	ADT
CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1976	160
CEDAR CREEK	North Dakota	Scour Critical — Countermeasures Installed	Good	1975	140
PIPESTEM CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1960	140
LITTLE KNIFE RIVER	North Dakota	Scour Critical — Countermeasures Installed	Fair	1955	130
CEDAR CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1964	125
BEAVER CREEK OVERFLOW	North Dakota	Scour Critical — Countermeasures Installed	Fair	1999	120
WINTERING RIVER	North Dakota	Scour Critical — Countermeasures Installed	Fair	1956	120
BEAVER CREEK	North Dakota	Scour Critical — Countermeasures Installed	Good	1961	115
EGG CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1971	115
DRAINAGE AREA	North Dakota	Scour Critical — Countermeasures Installed	Poor	1968	110
SQUARE BUTTE CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1960	110
CEDAR CREEK	North Dakota	Scour Critical — Countermeasures Installed	Good	2006	100
TIMBER CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1951	100
BIG MUDDY CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1937	100
S BRANCH LITTLE HEART RV	North Dakota	Scour Critical — Countermeasures Installed	Fair	1954	100
CREEK	North Dakota	Scour Critical — Countermeasures Installed	Good	1958	90
ANTELOPE CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1948	80
CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1963	80
CREEK	North Dakota	Scour Critical — Countermeasures Installed	Good	1955	80
SHEYENNE RIVER	North Dakota	Scour Critical — Countermeasures Installed	Good	2020	80
CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1956	78
THIRTY MILE CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1951	70
BEAVER CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1960	65
SHEYENNE RIVER	North Dakota	Scour Critical — Countermeasures Installed	Fair	1974	60
N. BRANCH GARNER CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1955	60
S. BRANCH GARNER CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1955	60
COAL BANK CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1960	60
SE BRANCH LITTLE HEART R	North Dakota	Scour Critical — Countermeasures Installed	Good	1960	60
S Branch Beaver Creek	North Dakota	Scour Critical — Countermeasures Installed	Fair	1968	52
COAL CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1965	50
INTERMITTANT CREEK	North Dakota	Scour Critical — Countermeasures Installed	Poor	1973	50
HEART RIVER	North Dakota	Scour Critical — Countermeasures Installed	Fair	1954	45
LITTLE DEEP CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1965	45
CANNONBALL RIVER	North Dakota	Scour Critical — Countermeasures Installed	Fair	1961	40
CREEK	North Dakota	Scour Critical — Countermeasures Installed	Good	1962	40
LONG CREEK	North Dakota	Scour Critical — Countermeasures Installed	Poor	1933	35
NORTH FORK GRAND RIVER	North Dakota	Scour Critical — Countermeasures Installed	Good	1992	30
CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1977	30
CANNONBALL RIVER	North Dakota	Scour Critical — Countermeasures Installed	Fair	1958	25
CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1973	20
TIMBER CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1960	20
CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1935	20
BIG COULEE	North Dakota	Scour Critical — Countermeasures Installed	Good	1988	20
COULEE	North Dakota	Scour Critical — Countermeasures Installed	Fair	1991	20
JAMES RIVER	North Dakota	Scour Critical — Countermeasures Installed	Good	1984	15
CREEK	North Dakota	Scour Critical — Countermeasures Installed	Good	2000	15
BRANCH OF ELM RIVER	North Dakota	Scour Critical — Countermeasures Installed	Poor	1968	10
ANTELOPE CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1979	10
CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1997	10
JAMES RIVER	North Dakota	Scour Critical — Countermeasures Installed	Good	1993	10

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.

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