Scour Critical Bridges in New Mexico

127 bridges in New Mexico 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 127 bridges in New Mexico have been identified as vulnerable to scour damage.

Clear
Bridge State Scour Status Condition Year Built ADT
COYOTE CREEK New Mexico Scour Critical — Unaddressed Poor 1935 166
STORM DRAINAGE New Mexico Scour Critical — Unaddressed Good 2016 50
STORM DRAINAGE New Mexico Scour Critical — Unaddressed Fair 2015 50
UNKNOWN CREEK New Mexico Scour Critical — Unaddressed Poor 1943 5
RED WASH New Mexico Scour Critical — Countermeasures Ineffective Fair 1960 4,813
Unnamed arroyo New Mexico Scour Critical — Countermeasures Ineffective Good 2024 1,464
Unnamed arroyo New Mexico Scour Critical — Countermeasures Ineffective Good 2024 1,464
Unnamed arroyo New Mexico Scour Critical — Countermeasures Ineffective Good 2024 1,464
Unnamed arroyo New Mexico Scour Critical — Countermeasures Ineffective Good 2024 1,464
SAND SPRING CREEK New Mexico Scour Critical — Countermeasures Ineffective Poor 1936 272
UNKNOWN CREEK New Mexico Scour Critical — Countermeasures Ineffective Fair 2022 10
UNKNOWN CREEK New Mexico Scour Critical — Countermeasures Ineffective Good 1943 5
UNKNOWN CREEK New Mexico Scour Critical — Countermeasures Ineffective Poor 1943 5
RIO DEL OSO New Mexico Scour Critical — Countermeasures Installed Poor 1964 11,253
RIO GRANDE New Mexico Scour Critical — Countermeasures Installed Fair 1940 9,647
RIO HONDO New Mexico Scour Critical — Countermeasures Installed Fair 1972 8,558
Las Huertas Creek New Mexico Scour Critical — Countermeasures Installed Poor 1975 7,686
GALLINAS RIVER New Mexico Scour Critical — Countermeasures Installed Fair 1909 6,684
TIJERAS CANYON New Mexico Scour Critical — Countermeasures Installed Fair 1968 6,431
RATTLESNAKE WASH New Mexico Scour Critical — Countermeasures Installed Fair 1951 4,813
SALT CREEK New Mexico Scour Critical — Countermeasures Installed Fair 1974 4,224
EAGLE DRAW New Mexico Scour Critical — Countermeasures Installed Fair 1969 3,419
RIO PUERCO OF THE WEST New Mexico Scour Critical — Countermeasures Installed Good 1980 3,004
HUNTER WASH New Mexico Scour Critical — Countermeasures Installed Good 1984 2,653
ARROYO DEL PUERTO New Mexico Scour Critical — Countermeasures Installed Fair 1957 2,527
JONES ARROYO New Mexico Scour Critical — Countermeasures Installed Fair 1970 2,303
BOHANAN ARROYO New Mexico Scour Critical — Countermeasures Installed Fair 1941 1,384
RIO GRANDE New Mexico Scour Critical — Countermeasures Installed Fair 1941 1,358
RIO GRANDE New Mexico Scour Critical — Countermeasures Installed Fair 1941 1,310
UNNAMED WATERWAY New Mexico Scour Critical — Countermeasures Installed Fair 1965 1,212
UNNAMED WATERWAY New Mexico Scour Critical — Countermeasures Installed Fair 1924 1,168
EL RITO CREEK New Mexico Scour Critical — Countermeasures Installed Fair 1957 1,165
TORREON WASH New Mexico Scour Critical — Countermeasures Installed Fair 1971 1,159
ARROYO HONDO New Mexico Scour Critical — Countermeasures Installed Fair 1979 1,132
CANADIAN RIVER New Mexico Scour Critical — Countermeasures Installed Fair 1956 1,111
RIO GRANDE New Mexico Scour Critical — Countermeasures Installed Fair 1941 924
UNNAMED WATERWAY New Mexico Scour Critical — Countermeasures Installed Fair 1967 819
ESCAVADA WASH New Mexico Scour Critical — Countermeasures Installed Fair 1987 681
NASCHITTI WASH New Mexico Scour Critical — Countermeasures Installed Poor 1928 681
COX CANYON New Mexico Scour Critical — Countermeasures Installed Poor 1979 681
IRRIGATION DITCH New Mexico Scour Critical — Countermeasures Installed Poor 1966 681
Cameron Creek New Mexico Scour Critical — Countermeasures Installed Good 2022 679
KING CANYON New Mexico Scour Critical — Countermeasures Installed Poor 1933 521
SECO CREEK New Mexico Scour Critical — Countermeasures Installed Fair 1933 521
RIO MORA New Mexico Scour Critical — Countermeasures Installed Fair 1940 492
RIO RUIDOSO New Mexico Scour Critical — Countermeasures Installed Good 2009 347
RIO RUIDOSO New Mexico Scour Critical — Countermeasures Installed Fair 1965 345
Rio Puerco New Mexico Scour Critical — Countermeasures Installed Fair 1965 339
NOSE ROCK WASH New Mexico Scour Critical — Countermeasures Installed Poor 1977 337
Rio Ruidoso New Mexico Scour Critical — Countermeasures Installed Fair 1960 337

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.