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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
CANAL Louisiana Scour Critical — Countermeasures Installed Fair 2004 300
SAN JOSE CREEK Louisiana Scour Critical — Countermeasures Installed Good 1994 300
HARPOON BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1984 300
JONES CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1989 300
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1975 298
Eureka Creek Louisiana Scour Critical — Countermeasures Installed Good 2020 297
TRIBUTARY TO COW CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1979 294
DUGDEMONA RIVER Louisiana Scour Critical — Countermeasures Installed Fair 1984 291
DUGDEMONA RIVER RELIEF Louisiana Scour Critical — Countermeasures Installed Good 1992 291
BAYOU DE LOUTRE Louisiana Scour Critical — Countermeasures Installed Fair 1975 290
WEST NATALBANY CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1958 287
ALI BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1981 284
CLARK CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1960 271
WATSON BRANCH Louisiana Scour Critical — Countermeasures Installed Fair 1981 270
TENSAS BAYOU Louisiana Scour Critical — Countermeasures Installed Poor 1958 268
BONNE IDEE Louisiana Scour Critical — Countermeasures Installed Fair 1979 268
BAYOU GALION Louisiana Scour Critical — Countermeasures Installed Fair 1978 268
BONNE IDEE Louisiana Scour Critical — Countermeasures Installed Fair 1957 268
DESIARD BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1975 265
DEER CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1974 265
Red Chute Bayou Louisiana Scour Critical — Countermeasures Installed Poor 1984 250
Caney Creek Louisiana Scour Critical — Countermeasures Installed Fair 1977 250
BLACK BAYOU Louisiana Scour Critical — Countermeasures Installed Poor 1982 250
LITTLE CREEK Louisiana Scour Critical — Countermeasures Installed Good 1982 250
BARNES CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1983 250
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1979 250
SIX MILE CREEK Louisiana Scour Critical — Countermeasures Installed Good 1994 250
LOONEY CANAL (PINE BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 2004 250
TRIB TO TANYARD CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1978 247
BAYOU Louisiana Scour Critical — Countermeasures Installed Good 2013 243
DRAIN Louisiana Scour Critical — Countermeasures Installed Poor 1969 243
BRUSHY BAYOU Louisiana Scour Critical — Countermeasures Installed Poor 1969 243
TEN MILE BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1969 243
TEN MILE B RELIEF Louisiana Scour Critical — Countermeasures Installed Poor 1969 243
SAN PATRICIO BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1975 243
RELIEF Louisiana Scour Critical — Countermeasures Installed Fair 1975 243
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1975 243
RELIEF Louisiana Scour Critical — Countermeasures Installed Poor 1975 243
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1975 243
WILDCAT BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1970 242
PINE BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1975 242
BULL HOLE CANAL Louisiana Scour Critical — Countermeasures Installed Good 2000 241
Coulee Des Iles Louisiana Scour Critical — Countermeasures Installed Good 2000 240
SIX MILE CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1950 240
DEER CREEK CUT-OFF Louisiana Scour Critical — Countermeasures Installed Fair 1978 240
PARMERS CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1967 236
CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1960 235
BAYOU SCIE RELIEF 1 Louisiana Scour Critical — Countermeasures Installed Poor 1960 235
BAYOU SCIE Louisiana Scour Critical — Countermeasures Installed Poor 1960 235
BAYOU SCIE RELIEF 3 Louisiana Scour Critical — Countermeasures Installed Poor 1960 235

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