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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
BURNS BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1960 1,594
BEE BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1960 1,594
BIG CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1968 1,590
BAYOU SAN MIGUEL RELIEF Louisiana Scour Critical — Countermeasures Installed Fair 1934 1,587
BIG KIESCHE Louisiana Scour Critical — Countermeasures Installed Fair 1952 1,582
BEAVER CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1950 1,571
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1953 1,568
CYPRESS BAYOU Louisiana Scour Critical — Countermeasures Installed Poor 1953 1,568
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1953 1,568
DRAIN Louisiana Scour Critical — Countermeasures Installed Poor 1972 1,558
CHOUPIQUE BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1962 1,553
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1979 1,542
BRUSHLEY BAYOU Louisiana Scour Critical — Countermeasures Installed Good 1994 1,527
YELLOW BRANCH CREEK Louisiana Scour Critical — Countermeasures Installed Good 1994 1,527
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1961 1,520
TICKFAW RIVER Louisiana Scour Critical — Countermeasures Installed Fair 1975 1,514
BLACKLAND BRANCH Louisiana Scour Critical — Countermeasures Installed Poor 1954 1,513
BAYOU SANTA BARB Louisiana Scour Critical — Countermeasures Installed Fair 1955 1,513
RELIEF SLOUGH Louisiana Scour Critical — Countermeasures Installed Fair 1955 1,513
KISATCHIE CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1955 1,513
FLAT SLOUGH Louisiana Scour Critical — Countermeasures Installed Fair 1955 1,513
TICKFAW RIVER RELIEF Louisiana Scour Critical — Countermeasures Installed Fair 1962 1,509
TICKFAW RIVER RELIEF Louisiana Scour Critical — Countermeasures Installed Fair 1962 1,509
TICKFAW RIVER Louisiana Scour Critical — Countermeasures Installed Fair 1962 1,509
SPRING BRANCH Louisiana Scour Critical — Countermeasures Installed Poor 1971 1,504
YELLOW WATER RIVER Louisiana Scour Critical — Countermeasures Installed Good 1993 1,491
BLACK LAKE RELIEF Louisiana Scour Critical — Countermeasures Installed Fair 1971 1,489
BLACK LAKE CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1971 1,489
GORMAN CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1991 1,478
CASTOR CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1962 1,473
RELIEF BRIDGE Louisiana Scour Critical — Countermeasures Installed Poor 1962 1,473
CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1955 1,467
JEEMS BAYOU Louisiana Scour Critical — Countermeasures Installed Poor 1973 1,464
BARTHOLOMEW BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1968 1,443
CANEY CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1982 1,443
CANEY CREEK RELIEF Louisiana Scour Critical — Countermeasures Installed Fair 1982 1,443
PETERS CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1970 1,420
ST JOSEPH BRANCH Louisiana Scour Critical — Countermeasures Installed Fair 1976 1,419
BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1962 1,405
WALLACE BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1982 1,400
NANTACHIE CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1983 1,388
WRIGHTS CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1968 1,388
TALLEYS CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1968 1,388
HOLDENS CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1968 1,388
TOPY CREEK RELIEF Louisiana Scour Critical — Countermeasures Installed Poor 1975 1,377
TOPY CREEK RELIEF Louisiana Scour Critical — Countermeasures Installed Poor 1975 1,377
DRAIN Louisiana Scour Critical — Countermeasures Installed Poor 1975 1,377
CASTOR CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1974 1,377
CASTOR CR. RELIEF Louisiana Scour Critical — Countermeasures Installed Fair 1974 1,377
DRY CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1972 1,370

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