Structure 8870 · McKinley County, NM

31-0009 over Death Wash

Carries 31-0009 over Death Wash, 2.3 Mi W Us-491 @ Mp-5.35.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck5/9 · Fair
Superstructure5/9 · Fair
Substructuresets the rating4/9 · Poor
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT93 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 4/9 · sets the rating

93 ft end to end, longest span 15 ft. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a through truss.

Built199234 years old
Length92.8 ft28.3 m
Daily traffic803counted 2023
Last inspectedMarch 2024every 12 months

Location

StateNew Mexico
CountyMcKinley
Location2.3 Mi W Us-491 @ Mp-5.35
Carries31-0009
CrossesDeath Wash
Coordinates35.60128, -108.81481

Physical Characteristics

MaterialAluminum/Wrought Iron/Cast Iron
DesignTruss - Thru
Total Length92.8 ft (28.3 m)
Max Span15.1 ft (4.6 m)
Deck Width17.4 ft (5.3 m)
Deck Area150.0 sq m
Main Spans6
Year Built1992

Traffic

Avg Daily Traffic803 (2023)
Truck Traffic11%
Lanes On Bridge1

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number000000000008870

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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