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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
BAYOU NARCISSE Louisiana Scour Critical — Countermeasures Installed Fair 1994 500
Collinsburg Creek Louisiana Scour Critical — Countermeasures Installed Fair 1987 500
BALL BRANCH Louisiana Scour Critical — Countermeasures Installed Fair 1981 500
SHINGLE MILL CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1981 500
CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1954 498
SCARBOROUGH CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1974 498
FLAT CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1978 498
LITTLE BAYOU BEOUF Louisiana Scour Critical — Countermeasures Installed Fair 1983 495
PHILLIPS CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1973 494
CANEY CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1978 494
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1959 485
TEN MILE CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1944 482
BOGGY BRANCH Louisiana Scour Critical — Countermeasures Installed Poor 1944 482
BRUSHY CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1944 482
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1951 482
JOES BRANCH Louisiana Scour Critical — Countermeasures Installed Poor 1970 475
HURRICANE CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1979 475
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1979 475
MUSTER GROUND CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1960 473
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1957 473
COW BAYOU RELIEF Louisiana Scour Critical — Countermeasures Installed Fair 1962 469
COW BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1962 469
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1936 468
HURRICANE CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1982 468
BLACK LAKE BAYOU Louisiana Scour Critical — Countermeasures Installed Poor 1981 467
DRAIN Louisiana Scour Critical — Countermeasures Installed Fair 1981 467
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1956 464
CAMP CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1956 464
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1957 464
BUSHNECK BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1979 462
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1977 454
20 ARPENT CANAL Louisiana Scour Critical — Countermeasures Installed Fair 1986 450
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1958 448
JOES BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1958 448
BENNENT BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 2012 444
CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1973 438
LITTLE CHAPEPEELA CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1992 438
SER. RD WARDS CREEK RR Louisiana Scour Critical — Countermeasures Installed Good 1994 437
L DUGDEMONA RIVER Louisiana Scour Critical — Countermeasures Installed Fair 1973 434
LEES CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1970 430
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1972 429
BRUSHY CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1974 429
ROCKY CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1979 429
TICKFAW RIVER Louisiana Scour Critical — Countermeasures Installed Poor 1973 426
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1967 426
MIDDLE FORK BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1952 422
MIDDLE FORK REL Louisiana Scour Critical — Countermeasures Installed Fair 1952 422
BIG CORNEY BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1952 422
CORNEY BAYOU REL Louisiana Scour Critical — Countermeasures Installed Fair 1952 422
MIDDLE SLOUGH Louisiana Scour Critical — Countermeasures Installed Fair 1952 422

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