Scour Critical Bridges in Louisiana

1,302 bridges in Louisiana 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 1,302 bridges in Louisiana have been identified as vulnerable to scour damage.

Clear

Bridge	State	Scour Status	Condition	Year Built	ADT
INDIAN CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1968	129
BEDICO CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1993	128
WAFER CREEK	Louisiana	Scour Critical — Countermeasures Installed	Fair	1978	127
BLACK CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1982	126
LEATHERMAN CREEK	Louisiana	Scour Critical — Countermeasures Installed	Fair	1977	125
SLOUGH	Louisiana	Scour Critical — Countermeasures Installed	Fair	1977	125
DRAINAGE CANAL	Louisiana	Scour Critical — Countermeasures Installed	Fair	1972	125
CREEK	Louisiana	Scour Critical — Countermeasures Installed	Fair	1977	123
INDIAN CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1949	123
BRUSHY CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1970	123
TRIB. TO MACKS BAYOU	Louisiana	Scour Critical — Countermeasures Installed	Poor	1979	120
BAYOU PIERE	Louisiana	Scour Critical — Countermeasures Installed	Fair	1992	120
COOKS SLOUGH	Louisiana	Scour Critical — Countermeasures Installed	Poor	1961	119
BRANCH	Louisiana	Scour Critical — Countermeasures Installed	Fair	1971	118
BLACK BAYOU	Louisiana	Scour Critical — Countermeasures Installed	Poor	1973	118
DRAIN	Louisiana	Scour Critical — Countermeasures Installed	Fair	1974	118
CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1974	118
ROGERS CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1960	118
BIG CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1976	115
MILL CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1970	115
COLVIN CREEK	Louisiana	Scour Critical — Countermeasures Installed	Fair	1975	114
JOES BAYOU	Louisiana	Scour Critical — Countermeasures Installed	Fair	1979	110
Patten Slough	Louisiana	Scour Critical — Countermeasures Installed	Fair	1963	110
COMITE CREEK	Louisiana	Scour Critical — Countermeasures Installed	Good	1985	110
Relief for Bayou Nepique	Louisiana	Scour Critical — Countermeasures Installed	Fair	1994	104
BAYOU NEZPIQUE	Louisiana	Scour Critical — Countermeasures Installed	Good	1994	104
PATRICK CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1960	104
Coulee	Louisiana	Scour Critical — Countermeasures Installed	Fair	1981	100
Coulee	Louisiana	Scour Critical — Countermeasures Installed	Good	2022	100
TOPY CREEK	Louisiana	Scour Critical — Countermeasures Installed	Fair	1975	100
TOPY CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1975	100
DRY CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1976	100
CASTOR CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1976	100
BAYOU	Louisiana	Scour Critical — Countermeasures Installed	Fair	1960	100
CHOCTAW CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1977	100
Drain	Louisiana	Scour Critical — Countermeasures Installed	Good	2016	100
Clark Bayou Trib	Louisiana	Scour Critical — Countermeasures Installed	Fair	2009	100
TRIB. TO MACKS BAYOU	Louisiana	Scour Critical — Countermeasures Installed	Poor	1977	100
FOSTER CREEK	Louisiana	Scour Critical — Countermeasures Installed	Good	1993	100
ROUNDAWAY BAYOU	Louisiana	Scour Critical — Countermeasures Installed	Poor	1955	100
HORSE BAYOU/DONALDSON ST	Louisiana	Scour Critical — Countermeasures Installed	Poor	1978	100
CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1967	100
LITTLE MARSH BAYOU	Louisiana	Scour Critical — Countermeasures Installed	Fair	2015	100
LITTLE MARSH BAYOU	Louisiana	Scour Critical — Countermeasures Installed	Fair	1999	100
ANACOCO BAYOU	Louisiana	Scour Critical — Countermeasures Installed	Fair	2001	100
BLACKWATER BAYOU	Louisiana	Scour Critical — Countermeasures Installed	Poor	1965	100
Therese Cr	Louisiana	Scour Critical — Countermeasures Installed	Fair	2023	100
BLOOD RIVER	Louisiana	Scour Critical — Countermeasures Installed	Fair	2006	100
WEST HOG BRANCH	Louisiana	Scour Critical — Countermeasures Installed	Fair	1970	100
LAPINE BAYOU	Louisiana	Scour Critical — Countermeasures Installed	Good	2013	99

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