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Product Safety9,700+ CPSC product recalls Food Safety28,600+ FDA food recalls Pet Safety1.3M FDA animal adverse events Drug Safety17,500+ FDA drug recalls Device Safety38,400+ FDA device recalls Workplace Safety102,900+ OSHA injury reports Brand HistoryRecall lookup by company

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Scour Critical Bridges

23,522 bridges across the US 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 23,522 bridges have been identified as vulnerable to scour damage.

Bridge State Scour Status Condition Year Built ADT
BRUSHY CREEK Texas Scour Critical — Countermeasures Ineffective Fair 1996 536
BIRCH CREEK RELIEF Texas Scour Critical — Countermeasures Ineffective Good 1996 536
DRAW Texas Scour Critical — Countermeasures Ineffective Good 1954 536
Arroyo Veleno Texas Scour Critical — Countermeasures Ineffective Fair 1979 536
SANDERS CRK REL Texas Scour Critical — Countermeasures Ineffective Good 1969 536
BIRCH CREEK Texas Scour Critical — Countermeasures Ineffective Good 1996 536
SANDERS CREEK Texas Scour Critical — Countermeasures Ineffective Fair 1956 536
EAST BRUSHY CREEK REL Texas Scour Critical — Countermeasures Ineffective Good 2006 534
DRAINAGE DITCH Texas Scour Critical — Countermeasures Ineffective Good 2009 533
TIMOTHY CREEK South Carolina Scour Critical — Countermeasures Ineffective Good 2023 530
WHITE ROCK CREEK Texas Scour Critical — Countermeasures Ineffective Fair 2009 529
MUD CREEK Texas Scour Critical — Countermeasures Ineffective Fair 1985 528
Lake Apache Texas Scour Critical — Countermeasures Ineffective Good 2023 527
TRIB ROCKY CREEK Texas Scour Critical — Countermeasures Ineffective Fair 1988 525
DOCTORS CREEK Texas Scour Critical — Countermeasures Ineffective Fair 1962 522
DRAW Texas Scour Critical — Countermeasures Ineffective Good 2000 518
WATER KETTLE BROOK Massachusetts Scour Critical — Countermeasures Ineffective Fair 2000 517
BIG SKID CREEK Texas Scour Critical — Countermeasures Ineffective Good 1971 512
CALIFORNIA CREEK Texas Scour Critical — Countermeasures Ineffective Good 1971 512
PEVELER CREEK Texas Scour Critical — Countermeasures Ineffective Good 1991 512
BIG CREEK Louisiana Scour Critical — Countermeasures Ineffective Good 1996 511
HCFCD DITCH M124-00-00 Texas Scour Critical — Countermeasures Ineffective Good 2009 510
DRAW Texas Scour Critical — Countermeasures Ineffective Fair 1963 508
DRAW Texas Scour Critical — Countermeasures Ineffective Good 1985 505
DRAW Texas Scour Critical — Countermeasures Ineffective Good 1958 504
WHITE OAK CREEK Texas Scour Critical — Countermeasures Ineffective Good 2016 500
DRAW Texas Scour Critical — Countermeasures Ineffective Fair 2014 500
HCFCD U106-10-00 Texas Scour Critical — Countermeasures Ineffective Fair 2003 500
DRAW Texas Scour Critical — Countermeasures Ineffective Good 2007 500
HCFCD DITCH U106-10-00 Texas Scour Critical — Countermeasures Ineffective Good 2003 500
NICHOLS CREEK Texas Scour Critical — Countermeasures Ineffective Good 1978 500
BEAR CREEK South Carolina Scour Critical — Countermeasures Ineffective Good 1979 500
MASON CREEK Texas Scour Critical — Countermeasures Ineffective Good 2013 500
GUM BAYOU Texas Scour Critical — Countermeasures Ineffective Good 1986 500
DRAINAGE DITCH Texas Scour Critical — Countermeasures Ineffective Good 2001 500
DRAINAGE DITCH Texas Scour Critical — Countermeasures Ineffective Good 2008 500
HCFCD DITCH Texas Scour Critical — Countermeasures Ineffective Fair 2006 500
ABNERS CREEK South Carolina Scour Critical — Countermeasures Ineffective Good 2023 500
Dry Creek Utah Scour Critical — Countermeasures Ineffective Fair 2012 500
DETENTION BASIN Texas Scour Critical — Countermeasures Ineffective Good 2012 500
FISH KILL CREEK New York Scour Critical — Countermeasures Ineffective Good 2023 500
DETENTION BASIN Texas Scour Critical — Countermeasures Ineffective Good 2012 500
LITTLE VINCE BAYOU Texas Scour Critical — Countermeasures Ineffective Good 2003 500
DRAINAGE DITCH Texas Scour Critical — Countermeasures Ineffective Good 1998 500
DRAINAGE DITCH Texas Scour Critical — Countermeasures Ineffective Fair 1988 500
HCFCD DITCH Texas Scour Critical — Countermeasures Ineffective Fair 1985 500
DRAINAGE DITCH Texas Scour Critical — Countermeasures Ineffective Fair 2007 500
HCFCD DITCH Texas Scour Critical — Countermeasures Ineffective Good 2008 500
LIVE OAK CREEK Texas Scour Critical — Countermeasures Ineffective Fair 1988 500
HCFCD DITCH Texas Scour Critical — Countermeasures Ineffective Good 1965 500

Scour Critical Bridges by State

States ranked by number of scour critical bridges.

StateScour CriticalUnaddressedCountermeasuresIneffective
Texas 3,912 75 516 3,321
Pennsylvania 2,233 45 2,187 1
Louisiana 1,302 13 1,288 1
South Carolina 1,263 0 1,217 46
Oregon 1,231 4 1,221 6
Michigan 1,081 14 1,062 5
Nebraska 962 224 732 6
New York 864 9 780 75
Indiana 756 7 749 0
Wisconsin 751 0 748 3
Kansas 638 9 626 3
California 623 27 562 34
Tennessee 581 12 569 0
Washington 516 14 487 15
Puerto Rico 496 9 487 0
Alabama 450 1 423 26
Iowa 392 3 385 4
New Jersey 362 2 360 0
Florida 357 4 339 14
Oklahoma 317 33 283 1
Missouri 312 4 307 1
Mississippi 301 6 286 9
Connecticut 279 0 276 3
Minnesota 257 38 202 17
Vermont 242 0 240 2
Colorado 241 3 238 0
Idaho 215 18 186 11
South Dakota 207 3 203 1
Arkansas 187 3 129 55
Massachusetts 166 15 106 45
Montana 166 13 140 13
Arizona 164 2 160 2
West Virginia 160 2 98 60
Alaska 159 1 146 12
Maine 140 13 126 1
North Carolina 130 9 105 16
New Mexico 127 4 114 9
North Dakota 102 14 87 1
Utah 100 6 82 12
Georgia 99 1 81 17
Illinois 99 3 85 11
Nevada 94 0 85 9
Rhode Island 94 0 93 1
New Hampshire 86 2 78 6
Hawaii 83 0 82 1
Kentucky 56 16 39 1
Maryland 54 1 51 2
Wyoming 51 1 48 2
Delaware 39 0 39 0
Ohio 12 2 4 6
Virginia 8 0 8 0
District of Columbia 5 0 4 1

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