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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 SCIE Louisiana Scour Critical — Countermeasures Installed Poor 1960 235
BAYOU SCIE RELIEF 3 Louisiana Scour Critical — Countermeasures Installed Poor 1960 235
BAYOU SCIE Louisiana Scour Critical — Countermeasures Installed Fair 1959 235
ALLIGATOR BAYOU Louisiana Scour Critical — Countermeasures Installed Poor 1957 233
TENSAS BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1979 230
CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1966 230
HURRICANE CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1966 230
WIGGINS BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1947 226
ST JOSEPH BRANCH Louisiana Scour Critical — Countermeasures Installed Poor 1959 225
RABY BRANCH Louisiana Scour Critical — Countermeasures Installed Fair 1959 225
Bear Branch Trib Louisiana Scour Critical — Countermeasures Installed Good 2016 220
ASHELYS BRANCH Louisiana Scour Critical — Countermeasures Installed Fair 2002 219
BURNT CABIN CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1960 218
20 ARPENT CANAL Louisiana Scour Critical — Countermeasures Installed Fair 1994 216
LITTE TENSAS RIVE Louisiana Scour Critical — Countermeasures Installed Fair 1970 216
SAN PATRICIO BAYOU Louisiana Scour Critical — Countermeasures Installed Fair 1957 215
BA SAN PATRICIO R Louisiana Scour Critical — Countermeasures Installed Fair 1957 215
JONES BAYOU Louisiana Scour Critical — Countermeasures Installed Poor 1958 212
HUCKABY RD. BLACK B.CA Louisiana Scour Critical — Countermeasures Installed Poor 1979 211
TEN MILE CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1983 210
CARTER RD 177 PRAIRIE B Louisiana Scour Critical — Countermeasures Installed Fair 1979 207
LOST CREEK Louisiana Scour Critical — Countermeasures Installed Good 1983 205
CASTOR CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1985 205
LOGGY BAYOU Louisiana Scour Critical — Countermeasures Installed Good 1980 203
DRY CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1976 203
COULEE Louisiana Scour Critical — Countermeasures Installed Fair 1949 200
GRANGERS CANAL Louisiana Scour Critical — Countermeasures Installed Good 2000 200
STILL BRANCH Louisiana Scour Critical — Countermeasures Installed Poor 1975 200
LOGAN BAYOU Louisiana Scour Critical — Countermeasures Installed Good 1982 200
RODERICK CREEK Louisiana Scour Critical — Countermeasures Installed Good 2015 200
BAYOU MACON Louisiana Scour Critical — Countermeasures Installed Fair 1960 200
BLOOD RIVER Louisiana Scour Critical — Countermeasures Installed Fair 2010 200
BAYOU BONNE IDEE Louisiana Scour Critical — Countermeasures Installed Poor 1979 200
CANAL Louisiana Scour Critical — Countermeasures Installed Fair 2009 200
CANAL Louisiana Scour Critical — Countermeasures Installed Fair 2009 200
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1990 200
HURRICANE SLOUGH Louisiana Scour Critical — Countermeasures Installed Fair 1961 199
20 ARPENT CANAL Louisiana Scour Critical — Countermeasures Installed Good 2015 195
LITTLE DARBONNE CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1978 189
BAYOU PIERRE Louisiana Scour Critical — Countermeasures Installed Poor 1971 189
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1966 189
BROWN CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1983 188
CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1965 186
GARRISON CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1984 185
HOLDER CREEK Louisiana Scour Critical — Countermeasures Installed Poor 1979 184
STONE CREEK RELIEF Louisiana Scour Critical — Countermeasures Installed Fair 1983 184
STOWE CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1983 184
CYPRESS CREEK Louisiana Scour Critical — Countermeasures Installed Fair 1983 184
SUTT BAYOU Louisiana Scour Critical — Countermeasures Installed Poor 1958 184
WESTFORK BAYOU-CANFIELD Louisiana Scour Critical — Countermeasures Installed Poor 1993 180

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