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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
CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1948 422
DORCHEAT BAYOU Louisiana Scour Critical — Countermeasures Installed Poor 1966 421
CRITTENDON CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1959 420
YELLOW WATER CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1992 418
DEER LICK CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1983 415
BERARD CANAL BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1965 414
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1960 411
DIVERSION CANAL Louisiana Scour Critical — Countermeasures Installed Fair 1967 410
DUGDEMONA RIVER Louisiana Scour Critical — Countermeasures Installed Fair 1983 410
DRAIN Louisiana Scour Critical — Countermeasures Installed Fair 1975 409
BRANCH Louisiana Scour Critical — Countermeasures Installed Fair 1977 409
GRAND BAYOU Louisiana Scour Critical — Countermeasures Installed Poor 1973 405
INDIAN CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1973 404
SUGAR CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1973 404
DARBONNE BAYOU Louisiana Scour Critical — Countermeasures Installed Poor 1973 404
Airport Canal Louisiana Scour Critical — Countermeasures Installed Good 1965 400
BAYOU DES GLAISES Louisiana Scour Critical — Countermeasures Installed Fair 1985 400
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1980 399
LAPORTS COULEE Louisiana Scour Critical — Countermeasures Installed Fair 1965 397
CASTOR BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1985 397
LITTLE 6 MILE CR Louisiana Scour Critical — Countermeasures Installed Poor 1965 396
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1943 396
CANAL Louisiana Scour Critical — Countermeasures Installed Fair 1995 391
BAYOU DARBONNE Louisiana Scour Critical — Countermeasures Installed Poor 1979 389
GEE CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1979 389
NORTH CHENIERE CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1980 387
BONEY CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1983 385
Fifi Bayou Louisiana Scour Critical — Countermeasures Installed Poor 1993 380
CLARKE BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1976 377
NEALY BRANCH Louisiana Scour Critical — Countermeasures Installed Fair 1970 376
POLE BRIDGE CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1970 376
DRY CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1968 376
JACK CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1968 376
SO CHOUDRANT CR Louisiana Scour Critical — Countermeasures Installed Fair 1968 376
BROWN CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1968 374
BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1977 372
SANDY CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1955 368
PARMERS CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1976 363
PALMERS BRANCH Louisiana Scour Critical — Countermeasures Installed Poor 1958 362
CANAL Louisiana Scour Critical — Countermeasures Installed Poor 1973 352
Coulee Louisiana Scour Critical — Countermeasures Installed Fair 2009 350
SALINE BAYOU TRIB Louisiana Scour Critical — Countermeasures Installed Fair 1991 350
MIDDLE COLYELL CREEK Louisiana Scour Critical — Countermeasures Installed Fair 2010 350
STALKINGHEAD CRK MCFEE S Louisiana Scour Critical — Countermeasures Installed Poor 1981 350
SOUTH CHENIERE CR Louisiana Scour Critical — Countermeasures Installed Fair 1982 344
BRANCH Louisiana Scour Critical — Countermeasures Installed Poor 1971 342
SIX MILE CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1971 342
EDWARDS MILL CR Louisiana Scour Critical — Countermeasures Installed Fair 1966 342
Connell Branch Louisiana Scour Critical — Countermeasures Installed Poor 1960 340
COUSHATTA BAYOU Louisiana Scour Critical — Countermeasures Installed Poor 1975 338

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