Structure 7294 · Colfax County, NM

I-25 Sbl over Nm-21

Carries I-25 Sbl over Nm-21, Jct I-25/NM-21 @ Springer.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT145 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

145 ft end to end, longest span 49 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.

Built197353 years old
Length145.0 ft44.2 m
Daily traffic4,664counted 2023
Last inspectedMarch 2023every 24 months

Location

StateNew Mexico
CountyColfax
LocationJct I-25/NM-21 @ Springer
CarriesI-25 Sbl
CrossesNm-21
Coordinates36.36116, -104.60398

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length145.0 ft (44.2 m)
Max Span48.9 ft (14.9 m)
Deck Width44.9 ft (13.7 m)
Deck Area605.5 sq m
Main Spans3
Year Built1973

Traffic

Avg Daily Traffic4,664 (2023)
Truck Traffic45%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000007294

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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