Structure 5477 · Cibola County, NM

Nm-124 over Bnsf Railroad

Carries Nm-124 over Bnsf Railroad, 0.1 Mi E Of Nm-279.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT178 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

178 ft end to end, longest span 67 ft: 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.

Built1955rebuilt 2007
Length178.1 ft54.3 m
Daily traffic2,209counted 2023
Last inspectedJanuary 2024every 24 months

Location

StateNew Mexico
CountyCibola
Location0.1 Mi E Of Nm-279
CarriesNm-124
CrossesBnsf Railroad
Coordinates35.04520, -107.39306

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length178.1 ft (54.3 m)
Max Span66.9 ft (20.4 m)
Deck Width65.6 ft (20 m)
Deck Area1,086 sq m
Main Spans3
Year Built1955 (reconstructed 2007)

Traffic

Avg Daily Traffic2,209 (2023)
Truck Traffic11%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000005477

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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