Structure 8836 · McKinley County, NM

I-40 EB over Nm-118

Carries I-40 EB over Nm-118, West Gallup Interchange.

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT165 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

165 ft end to end: about 2 semi-trucks nose to tail. Lengths and the semi-truck 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 multi-beam bridge.

Built1993rebuilt 1995
Length165.0 ft50.3 m
Daily traffic25,905counted 2023
Last inspectedAugust 2024every 24 months

Location

StateNew Mexico
CountyMcKinley
LocationWest Gallup Interchange
CarriesI-40 EB
CrossesNm-118
Coordinates35.50566, -108.83060

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length165.0 ft (50.3 m)
Max Span160.1 ft (48.8 m)
Deck Width51.8 ft (15.8 m)
Deck Area794.7 sq m
Main Spans1
Year Built1993 (reconstructed 1995)

Traffic

Avg Daily Traffic25,905 (2023)
Truck Traffic14%
Lanes On Bridge4
Lanes Under Bridge4

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000008836

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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