Structure 9500 · McKinley County, NM

Nm-371 over Unnamed Waterway

Carries Nm-371 over Unnamed Waterway, 12.7 Miles N Of Nm-122.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT72 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 72 ft across with 3 openings. 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, so those are drawn as typical for a culvert.

Built1958rebuilt 2011
Length71.9 ft21.9 m
Daily traffic3,698counted 2023
Last inspectedOctober 2021every 48 months

Location

StateNew Mexico
CountyMcKinley
Location12.7 Miles N Of Nm-122
CarriesNm-371
CrossesUnnamed Waterway
Coordinates35.52999, -108.13312

Physical Characteristics

MaterialSteel
DesignCulvert
Total Length71.9 ft (21.9 m)
Max Span8.9 ft (2.7 m)
Deck Area319.7 sq m
Main Spans3
Year Built1958 (reconstructed 2011)

Traffic

Avg Daily Traffic3,698 (2023)
Truck Traffic11%
Lanes On Bridge3

Inspection & Ownership

Last InspectionOctober 2021
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000009500

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.