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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
LAPINE BAYOU Louisiana Scour Critical — Countermeasures Installed Good 2013 99
BAYOU DE LOUTRE Louisiana Scour Critical — Countermeasures Installed Fair 1984 99
CHICO BAYOU ROBSON ROAD Louisiana Scour Critical — Countermeasures Installed Fair 1984 97
Dooley Canal Louisiana Scour Critical — Countermeasures Installed Fair 1978 97
E.FORK OF STATELINE CREE Louisiana Scour Critical — Countermeasures Installed Fair 1983 96
SILVER CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1957 94
GLAZE CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1979 94
SILVER CREEK RELIEF Louisiana Scour Critical — Countermeasures Installed Fair 1957 94
SPRING CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1960 93
COOLEY CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1980 92
CORINNE CANAL Louisiana Scour Critical — Countermeasures Installed Fair 2011 90
Posten Bayou Louisiana Scour Critical — Countermeasures Installed Poor 1988 90
DARBONNE BAYOU TRIBUTAR Louisiana Scour Critical — Countermeasures Installed Good 1986 90
DARBONNE BAYOU TRIBUTAR Louisiana Scour Critical — Countermeasures Installed Fair 1986 90
DRAIN TO LITTLE BY.BOEUF Louisiana Scour Critical — Countermeasures Installed Fair 1980 90
CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1960 90
DEER CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1978 90
Coulee Louisiana Scour Critical — Countermeasures Installed Fair 1993 89
BLACK BOTTOM BRANCH Louisiana Scour Critical — Countermeasures Installed Fair 1979 87
TRIB TO TAD POLE LAKE Louisiana Scour Critical — Countermeasures Installed Fair 1979 86
TRIBUTARY TO SALING BAYO Louisiana Scour Critical — Countermeasures Installed Poor 1952 85
CYPRESS BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1999 85
BEAR CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1984 85
PRETTY CREEK Louisiana Scour Critical — Countermeasures Installed Good 2007 84
COMITE RIVER Louisiana Scour Critical — Countermeasures Installed Poor 1995 84
DRAINAGE CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1994 84
LAPINE BAYOU Louisiana Scour Critical — Countermeasures Installed Good 1985 83
CREEK BRIDGE Louisiana Scour Critical — Countermeasures Installed Poor 1979 81
SIX MILE CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1975 80
Posten Bayou Louisiana Scour Critical — Countermeasures Installed Poor 1992 80
HUCKABY RD. KELLY B. Louisiana Scour Critical — Countermeasures Installed Fair 1980 80
PATTEN SLOUGH Louisiana Scour Critical — Countermeasures Installed Poor 1985 80
WILLIAMSON CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1960 80
PEDDICOAT BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 2006 80
KYIAIES CREEK RELIEF Louisiana Scour Critical — Countermeasures Installed Fair 1991 80
TRIB TO BOGGY BAYOU Louisiana Scour Critical — Countermeasures Installed Poor 1984 78
CHOCTAW BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1989 78
E.FORK OF SHETTLEWORTH B Louisiana Scour Critical — Countermeasures Installed Fair 1985 78
GAMM RD EXT SWIFT BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1980 78
TIGER BRANCH Louisiana Scour Critical — Countermeasures Installed Fair 1980 78
HARTMAN BRANCH Louisiana Scour Critical — Countermeasures Installed Fair 1993 78
BUCHANAN BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1983 77
GAMM RD SWIFT BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1980 77
NANCE BRANCH Louisiana Scour Critical — Countermeasures Installed Poor 1976 77
LITTLE CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1978 77
LITTLE CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1961 77
DRAINAGE CANAL Louisiana Scour Critical — Countermeasures Installed Fair 1979 77
BIG CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1976 77
SUGAR CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1976 75
SARA BAYOU Louisiana Scour Critical — Countermeasures Installed Poor 2007 74

Scour Critical Rating Codes

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