Structure 7525 · Taos County, NM

Nm-578 over Roadway Slide Area

Carries Nm-578 over Roadway Slide Area, 1.40 Mi S Of Jct Nm-38.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT142 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

142 ft end to end, longest span 25 ft. 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 slab bridge.

Built197551 years old
Length142.1 ft43.3 m
Daily traffic838counted 2023
Last inspectedJune 2024every 24 months

Location

StateNew Mexico
CountyTaos
Location1.40 Mi S Of Jct Nm-38
CarriesNm-578
CrossesRoadway Slide Area
Coordinates36.68799, -105.38579

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length142.1 ft (43.3 m)
Max Span24.9 ft (7.6 m)
Deck Width35.1 ft (10.7 m)
Deck Area463.3 sq m
Main Spans6
Year Built1975

Traffic

Avg Daily Traffic838 (2023)
Truck Traffic11%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000007525

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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