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
JAMES RIVER	North Dakota	Scour Critical — Unaddressed	Fair	1933	10,370
JAMES RIVER	North Dakota	Scour Critical — Unaddressed	Good	1965	1,825
TURTLE RIVER	North Dakota	Scour Critical — Unaddressed	Good	2005	600
CREEK	North Dakota	Scour Critical — Unaddressed	Fair	1958	580
HEART RIVER	North Dakota	Scour Critical — Unaddressed	Good	1990	485
ANTELOPE CREEK	North Dakota	Scour Critical — Unaddressed	Good	1990	485
CANNONBALL RIVER	North Dakota	Scour Critical — Unaddressed	Good	1990	355
GOOSE RIVER	North Dakota	Scour Critical — Unaddressed	Good	1996	235
LITTLE BEICEGEL CREEK	North Dakota	Scour Critical — Unaddressed	Good	1988	120
CREEK	North Dakota	Scour Critical — Unaddressed	Poor	2002	45
SHEYENNE RIVER	North Dakota	Scour Critical — Unaddressed	Fair	1979	25
LITTLE MUDDY RIVER	North Dakota	Scour Critical — Unaddressed	Poor	1914	20
NORTH BRANCH GOOSE RIVER	North Dakota	Scour Critical — Unaddressed	Good	1999	20
COTTONWOOD CREEK	North Dakota	Scour Critical — Unaddressed	Good	2020	18
CREEK	North Dakota	Scour Critical — Countermeasures Ineffective	Good	2024	33
BOIS DE SIOUX RIVER	North Dakota	Scour Critical — Countermeasures Installed	Fair	1929	15,200
JAMES RIVER	North Dakota	Scour Critical — Countermeasures Installed	Fair	1960	10,370
HEART RIVER	North Dakota	Scour Critical — Countermeasures Installed	Fair	1931	9,940
JAMES RIVER	North Dakota	Scour Critical — Countermeasures Installed	Fair	1939	5,600
GOOSE RIVER	North Dakota	Scour Critical — Countermeasures Installed	Fair	1966	4,800
APPLE CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1965	3,850
APPLE CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1965	3,850
APPLE CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1914	2,900
SAND CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1960	2,550
CREEK	North Dakota	Scour Critical — Countermeasures Installed	Good	1941	1,970
FLAT CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1959	1,730
SPRING CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1941	1,690
LONG LAKE	North Dakota	Scour Critical — Countermeasures Installed	Good	1961	1,410
FLAT CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1941	1,370
LITTLE MISSOURI R.	North Dakota	Scour Critical — Countermeasures Installed	Fair	1964	1,300
MAPLE RIVER	North Dakota	Scour Critical — Countermeasures Installed	Good	1981	1,200
CANNONBALL RIVER	North Dakota	Scour Critical — Countermeasures Installed	Fair	1960	830
NO. BRANCH FOREST RIVER	North Dakota	Scour Critical — Countermeasures Installed	Good	1962	790
KNIFE RIVER	North Dakota	Scour Critical — Countermeasures Installed	Fair	1950	790
LITTLE MISSOURI RIVER	North Dakota	Scour Critical — Countermeasures Installed	Fair	1942	730
CANNONBALL RIVER	North Dakota	Scour Critical — Countermeasures Installed	Good	1979	670
MAUVAIS COULEE	North Dakota	Scour Critical — Countermeasures Installed	Poor	1962	560
RED RIVER OF THE NORTH	North Dakota	Scour Critical — Countermeasures Installed	Fair	1974	500
HEART RIVER	North Dakota	Scour Critical — Countermeasures Installed	Fair	1962	450
STONE CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1961	390
DOWNING CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1958	355
SHEYENNE RIVER	North Dakota	Scour Critical — Countermeasures Installed	Poor	1964	300
PIPESTEM CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1963	300
ANTELOPE CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1979	270
SHEYENNE RIVER	North Dakota	Scour Critical — Countermeasures Installed	Fair	1965	250
CEDAR CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1972	240
TURTLE CREEK	North Dakota	Scour Critical — Countermeasures Installed	Fair	1963	220
CREEK BED	North Dakota	Scour Critical — Countermeasures Installed	Fair	1964	215
TONGUE RIVER	North Dakota	Scour Critical — Countermeasures Installed	Good	1970	170
WINTERING RIVER	North Dakota	Scour Critical — Countermeasures Installed	Fair	1964	166

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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