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Scour-Critical Bridges in New Mexico

New Mexico has 118 bridges rated scour-critical by the Federal Highway Administration. These bridges have foundations that are unstable or at risk of undermining during flood events. Scour-critical doesn't mean a bridge is about to collapse — it means extra monitoring and countermeasures are in place — but these structures are priorities for repair or replacement.

How this ranking works

This state list filters to NBI scour ratings 0 through 3, then sorts by average daily traffic. It is intended to show flood-vulnerability exposure, not to label any bridge as currently unsafe.

BridgeCountyScour RatingDaily TrafficCondition
Us-84 over Rio Del OsoRio Arriba3 — Serious11,253Poor
Fl-5349 over Rio GrandeRio Arriba3 — Serious9,647Fair
Fl-4704 over Rio HondoChaves3 — Serious8,558Fair
Nm-313 over Las Huertas CreekSandoval3 — Serious7,686Poor
Fl-4658 over Gallinas RiverSan Miguel3 — Serious6,684Fair
Nm-337 over Tijeras CanyonBernalillo3 — Serious6,431Fair
Irr/us-64 over Rattlesnake WashSan Juan3 — Serious4,813Fair
Us-491 over Salt CreekSan Juan3 — Serious4,224Fair
Fl-5266 over Eagle DrawEddy3 — Serious3,419Fair
31-z001 over Rio Puerco Of The WestMcKinley3 — Serious3,004Good
Nm-371 over Hunter WashSan Juan3 — Serious2,653Good
Nm-605 over Arroyo Del PuertoMcKinley3 — Serious2,527Fair
45-3000 over Jones ArroyoSan Juan3 — Serious2,303Fair
45-z003 over Bohanan ArroyoSan Juan3 — Serious1,384Fair
Nm-226 over Rio GrandeDona Ana3 — Serious1,358Fair
13-c052 over Rio GrandeDona Ana3 — Serious1,310Fair
Nm-592 over Unnamed WaterwaySanta Fe3 — Serious1,212Fair
Nm-35 over Unnamed WaterwayGrant3 — Serious1,168Fair
Nm-554 over El Rito CreekRio Arriba3 — Serious1,165Fair
Nm-197 over Torreon WashSandoval3 — Serious1,159Fair
49-067a over Arroyo HondoSanta Fe3 — Serious1,132Fair
Us-56 over Canadian RiverColfax3 — Serious1,111Fair
Nm-154 over Rio GrandeDona Ana3 — Serious924Fair
Nm-549 over Unnamed WaterwayLuna3 — Serious819Fair
Fr-6664 over Naschitti WashSan Juan3 — Serious681Poor
45-4599 over Irrigation DitchSan Juan3 — Serious681Poor
45-z003 over Cox CanyonSan Juan3 — Serious681Poor
45-7900 over Escavada WashSan Juan3 — Serious681Fair
Fl-6400 over Cameron CreekGrant3 — Serious679Good
Nm-187 over King CanyonSierra3 — Serious521Poor
Nm-187 over Seco CreekSierra3 — Serious521Fair
Nm-63 over Rio MoraSan Miguel3 — Serious492Fair
27-z012 over Rio RuidosoLincoln3 — Serious347Good
27-z010 over Rio RuidosoLincoln3 — Serious345Fair
61-000 over Rio PuercoValencia3 — Serious339Fair
13-e393 over Unnamed WaterwayDona Ana3 — Serious337Poor
27-z003 over Rio RuidosoLincoln3 — Serious337Poor
27-z004 over Rio RuidosoLincoln3 — Serious337Fair
27-z001 over Rio RuidosoLincoln3 — Serious337Fair
31-0012 over Rio NutriaMcKinley3 — Serious337Fair
31-z043 over Rio PuercoMcKinley3 — Serious337Poor
31-mc43 over Nose Rock WashMcKinley3 — Serious337Poor
31-0077 over Rio PuercoMcKinley3 — Serious337Fair
31-mc10 over Bread Spring WashMcKinley3 — Serious337Fair
31-0026 over Salt Water WashMcKinley3 — Serious337Fair
49-101d over Pojoaque RiverSanta Fe3 — Serious337Fair
27-z003 over Rio RuidosoLincoln3 — Serious336Fair
Fl-6615 over Tijeras ArroyoBernalillo3 — Serious328Fair
49-z006 over Santa Cruz RiverSanta Fe3 — Serious326Fair
Fl-4189 over Hampton ArroyoSan Juan3 — Serious312Good
Nm-152 over Percha CreekSierra3 — Serious308Fair
Nm-187 over Greenhorn ArroyoSierra3 — Serious297Poor
Nm-503 over Rio De MedioSanta Fe3 — Serious275Fair
11-c048 over Unnamed WaterwayDe Baca3 — Serious256Poor
11-c001 over Taiban CreekDe Baca3 — Serious256Fair
55-b007 over Rio GrandeTaos3 — Serious250Fair
55-z004 over Rio PuebloTaos3 — Serious250Fair
47-b28a over Tres Hermanos CreekSan Miguel3 — Serious238Fair
53-0125 over Abo ArroyoSocorro3 — Serious224Fair
47-004 over Unnamed WaterwaySan Miguel3 — Serious210Fair
47-a19a over Tecolote CreekSan Miguel3 — Serious210Poor
47-a19a over Tecolote CreekSan Miguel3 — Serious210Fair
47-a04a over Canada Del RocioSan Miguel3 — Serious210Fair
47-b43b over Cow CreekSan Miguel3 — Serious210Good
47-b41a over Pecos RiverSan Miguel3 — Serious210Good
47-z001 over Pecos RiverSan Miguel3 — Serious210Good
Nm-304 over Salas ArroyoSocorro3 — Serious208Poor
Fl-5703 over Rio HondoChaves3 — Serious206Fair
Fl-5719 over Rio HondoChaves3 — Serious206Fair
Fl-5702 over Rio HondoChaves3 — Serious206Fair
Nm-161 over Sapello RiverMora3 — Serious205Fair
Access Road over Santa Fe RiverSandoval3 — Serious200Fair
17-b013 over Mimbres RiverGrant3 — Serious191Fair
33-b014 over Mora RiverMora3 — Serious189Good
Tyron Ridge Access over Unnamed WaterwayGrant3 — Serious180Good
Nm-1 over Unnamed WaterwaySocorro3 — Serious174Fair
Nm-161 over Wolf CreekMora3 — Serious171Fair
Nm-406 over North Canadian RiverUnion3 — Serious169Fair
Nm-120 over Unnamed WaterwayMora3 — Serious167Fair
39-212 over Coyote CreekRio Arriba2 — Critical166Poor
39-0194 over Canones CreekRio Arriba3 — Serious166Fair
Nm-503 over Rio QuemadoSanta Fe3 — Serious159Fair
Nm-104 over Unnamed WaterwaySan Miguel3 — Serious151Poor
IRR BIA RTE N9504 over Fiquerdo WashMcKinley3 — Serious140Poor
Nm-93 over Arroyo TrujilloQuay3 — Serious138Fair
07-c012 over Cimarron RiverColfax3 — Serious137Good
07-z000 over Raton CreekColfax3 — Serious133Fair
Nm-576 over Vallecitos RiverRio Arriba3 — Serious116Poor
43-0011 over Arroyo HondoSandoval3 — Serious112Fair
Nm-21 over Rayado CreekColfax3 — Serious103Poor
43-z005 over Canon Denoberto SandovalSandoval3 — Serious102Fair
43-z001 over Jemez RiverSandoval3 — Serious102Fair
37-qr-ar over Unnamed WaterwayQuay3 — Serious100Fair
37-qr-ar over Pajarito CreekQuay3 — Serious100Good
Nm-161 over Mora RiverMora3 — Serious81Poor
Nm-161 over Mora RiverMora3 — Serious81Fair
Nm-24 over Unnamed WaterwayChaves3 — Serious80Fair
Nm-266 over Sapello RiverSan Miguel3 — Serious74Poor
Nm-601 over Unnamed WaterwayCatron3 — Serious72Fair
19-z002 over Puerto CreekGuadalupe3 — Serious72Good
Nm-562 over Garcia CreekUnion3 — Serious70Fair
03-0013 over Cottonwood CanyonCatron3 — Serious66Fair
03-0366 over Lower Trout CreekCatron3 — Serious66Fair
59-115 over Unnamed WaterwayUnion3 — Serious57Fair
Nm-126 over Rito Pena NegrasSandoval3 — Serious53Fair
Wsmr S RT 252 over Storm DrainageOtero2 — Critical50Good
Wsmr S RT 252 over Storm DrainageOtero2 — Critical50Fair
Nm-1 over Unnamed WaterwaySocorro3 — Serious40Fair
Nm-1 over Unnamed WaterwaySocorro3 — Serious40Fair
Fr-2151 over Wolf CreekMora3 — Serious37Poor
17-z011 over Gila RiverGrant3 — Serious30Fair
I. S. Rte. 74 over Jemez RiverSandoval3 — Serious30Good
Navajo BLVD over South Fork Puerco RiverMcKinley3 — Serious5Poor
East Esacpe Road over Unknown CreekMcKinley3 — Serious5Poor
East Patrol Road over Unknown CreekMcKinley2 — Critical5Poor
F&e Connector Road over Unknown CreekMcKinley3 — Serious5Poor
C-central Road over Fenced Up Horse ArroyoMcKinley3 — Serious5Poor
Navajo BLVD over Fenced Up Horse ArroyoMcKinley3 — Serious5Fair