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
HALFWAY CREEK	Louisiana	Scour Critical — Countermeasures Installed	Fair	1977	759
FALSE RIVER CANAL	Louisiana	Scour Critical — Countermeasures Installed	Poor	1980	748
BIG CREEK RELIEF	Louisiana	Scour Critical — Countermeasures Installed	Fair	1992	742
BIG CREEK	Louisiana	Scour Critical — Countermeasures Installed	Good	1992	742
LONG POINT GULLY	Louisiana	Scour Critical — Countermeasures Installed	Good	1952	729
DUKEDALL CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1979	713
Red Chute Bayou	Louisiana	Scour Critical — Countermeasures Installed	Poor	1995	710
SAN PATRICIO BAYOU	Louisiana	Scour Critical — Countermeasures Installed	Fair	1986	710
SUGAR CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1972	709
CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1972	709
BAYOU HA HA	Louisiana	Scour Critical — Countermeasures Installed	Poor	1958	708
TAWPAW BAYOU	Louisiana	Scour Critical — Countermeasures Installed	Poor	1958	708
COBURN CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1970	703
Sides Bayou	Louisiana	Scour Critical — Countermeasures Installed	Poor	1969	700
CANAL	Louisiana	Scour Critical — Countermeasures Installed	Fair	1984	700
INDIAN CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1976	697
DRAIN	Louisiana	Scour Critical — Countermeasures Installed	Fair	1967	688
SILVER CREEK	Louisiana	Scour Critical — Countermeasures Installed	Fair	1960	688
DRAIN	Louisiana	Scour Critical — Countermeasures Installed	Fair	1967	688
LITTLE KIESCHE CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1974	687
DARTIGO CREEK	Louisiana	Scour Critical — Countermeasures Installed	Good	1993	683
BLACK CREEK	Louisiana	Scour Critical — Countermeasures Installed	Good	1999	683
NANTACHIE CREEK	Louisiana	Scour Critical — Countermeasures Installed	Fair	1982	683
CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1970	681
DRAIN	Louisiana	Scour Critical — Countermeasures Installed	Fair	1967	666
DRAIN	Louisiana	Scour Critical — Countermeasures Installed	Fair	1967	666
HAY CREEK	Louisiana	Scour Critical — Countermeasures Installed	Fair	1959	659
THORNY BRANCH	Louisiana	Scour Critical — Countermeasures Installed	Poor	1968	655
INDIAN CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1968	655
BEAR CREEK	Louisiana	Scour Critical — Countermeasures Installed	Fair	1951	653
BLUFF CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1967	653
STATE LINE CREEK	Louisiana	Scour Critical — Countermeasures Installed	Good	1986	650
COOPER ROAD DITCH	Louisiana	Scour Critical — Countermeasures Installed	Fair	1982	650
CREEK	Louisiana	Scour Critical — Countermeasures Installed	Good	1982	650
CANAL	Louisiana	Scour Critical — Countermeasures Installed	Fair	1994	632
CYPRESS BAYOU RELIEF	Louisiana	Scour Critical — Countermeasures Installed	Poor	1969	622
CYPRESS BAYOU	Louisiana	Scour Critical — Countermeasures Installed	Poor	1969	622
WALKER CREEK RELIEF	Louisiana	Scour Critical — Countermeasures Installed	Fair	1981	622
WALKER CREEK BRIDGE	Louisiana	Scour Critical — Countermeasures Installed	Fair	1981	622
CREEK	Louisiana	Scour Critical — Countermeasures Installed	Good	1992	611
CREEK	Louisiana	Scour Critical — Countermeasures Installed	Fair	1974	611
CREEK	Louisiana	Scour Critical — Countermeasures Installed	Fair	1974	611
CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1974	611
BOSSIER BAYOU	Louisiana	Scour Critical — Countermeasures Installed	Fair	1960	610
DRAIN	Louisiana	Scour Critical — Countermeasures Installed	Poor	1974	609
ANTOINE CREEK	Louisiana	Scour Critical — Countermeasures Installed	Fair	1977	609
LEATHERMAN CREEK	Louisiana	Scour Critical — Countermeasures Installed	Fair	1981	609
GRAY CREEK	Louisiana	Scour Critical — Countermeasures Installed	Poor	1977	609
CREEK	Louisiana	Scour Critical — Countermeasures Installed	Good	1982	606
Coulee Mine	Louisiana	Scour Critical — Countermeasures Installed	Fair	2003	602

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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