Structure 3033012 · McKinley County, NM

Fdr 151 over Milk Ranch CR

Carries Fdr 151 over Milk Ranch CR, 6.25-mi S/o Nm-400/1-40.

Overall conditionPoor

Set by its lowest-rated component: Culvert at 3 of 9.

How ratings work
Culvertsets the rating3/9 · Serious
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT29 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 3/9

A culvert 29 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.

Built199531 years old
Length28.9 ft8.8 m
Daily traffic150counted 2021
Last inspectedApril 2024every 12 months

Location

StateNew Mexico
CountyMcKinley
Location6.25-mi S/o Nm-400/1-40
CarriesFdr 151
CrossesMilk Ranch CR
Coordinates35.42500, -108.55500

Physical Characteristics

MaterialSteel
DesignCulvert
Total Length28.9 ft (8.8 m)
Max Span8.2 ft (2.5 m)
Deck Area43.1 sq m
Main Spans3
Year Built1995

Traffic

Avg Daily Traffic150 (2021)
Truck Traffic5%
Lanes On Bridge1

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 12 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number03033012

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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