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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
WRIGHTS CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1958 1,186
TALLEYS CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1958 1,186
SALS BRANCH Louisiana Scour Critical — Countermeasures Installed Poor 1958 1,186
TENSAS RIVER Louisiana Scour Critical — Countermeasures Installed Fair 1954 1,181
DULARGE BAYOU Louisiana Scour Critical — Countermeasures Installed Good 2013 1,177
MILL CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1971 1,172
SPRAWLS MILL CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1970 1,172
READHIMER CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1971 1,172
TCHEFUNCTA RIVER Louisiana Scour Critical — Countermeasures Installed Fair 1943 1,162
GORDON CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1953 1,162
BRUSHLEY CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1981 1,160
SALEM CREEK Louisiana Scour Critical — Countermeasures Installed Good 1979 1,160
DRAIN Louisiana Scour Critical — Countermeasures Installed Fair 1972 1,157
BAYOU CASTOR RELIEF Louisiana Scour Critical — Countermeasures Installed Poor 1971 1,157
BAYOU CASTOR Louisiana Scour Critical — Countermeasures Installed Poor 1972 1,157
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1977 1,157
GARRISON CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1974 1,150
LITTLE SANDY CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1965 1,149
SIMS BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1975 1,146
CHAPPEPEELA RELIEF Louisiana Scour Critical — Countermeasures Installed Fair 1990 1,145
CHAPPEPEELA CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1990 1,145
RAMBIN BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1980 1,142
TEN MILE CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1960 1,138
BERRYS CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1969 1,137
CARROL CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1972 1,130
BRUSHY CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1972 1,130
NATALBANY RIVER Louisiana Scour Critical — Countermeasures Installed Good 1962 1,130
LITTLE COLEWA BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1978 1,129
MILL CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1960 1,118
BEE BAYOU Louisiana Scour Critical — Countermeasures Installed Poor 1954 1,108
BAYOU MARROW Louisiana Scour Critical — Countermeasures Installed Fair 1965 1,107
Warner Creek Louisiana Scour Critical — Countermeasures Installed Poor 1959 1,105
DRAIN Louisiana Scour Critical — Countermeasures Installed Poor 1954 1,105
LAWRENCE CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1975 1,105
COULEE Louisiana Scour Critical — Countermeasures Installed Poor 1974 1,100
BAYOU-SAN-PATRICIO Louisiana Scour Critical — Countermeasures Installed Poor 1977 1,099
B GRAND CANE RELIEF Louisiana Scour Critical — Countermeasures Installed Fair 1958 1,093
BAYOU GRAND CANE Louisiana Scour Critical — Countermeasures Installed Fair 1958 1,093
BRIDGE CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1953 1,092
BAYOU BLUE Louisiana Scour Critical — Countermeasures Installed Fair 1957 1,088
BLACK LAKE BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1982 1,087
BLACK LAKE BAYOU RELIEF Louisiana Scour Critical — Countermeasures Installed Fair 1982 1,087
SLOUGH BRIDGE Louisiana Scour Critical — Countermeasures Installed Fair 1982 1,087
WHITE BAYOU Louisiana Scour Critical — Countermeasures Installed Poor 1970 1,087
DRAIN Louisiana Scour Critical — Countermeasures Installed Fair 1978 1,085
Coulee Louisiana Scour Critical — Countermeasures Installed Good 2007 1,082
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1983 1,072
BIG CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1973 1,064
BIG CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1973 1,064
WALNUT CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1973 1,064

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