Structure 2388 · Dona Ana County, NM

Nm-320 over Irrigation Canal

Carries Nm-320 over Irrigation Canal, 0.6 Mi E Of Jct Nm-185.

Overall conditionPoor

Set by its lowest-rated component: Deck and Superstructure and Substructure at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructuresets the rating4/9 · Poor
Substructuresets the rating4/9 · Poor
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT33 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9Superstructure 4/9Substructure 4/9

33 ft end to end, longest span 16 ft. 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 or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built1923103 years old
Length33.1 ft10.1 m
Daily traffic2,605counted 2023
Last inspectedDecember 2024every 12 months

Location

StateNew Mexico
CountyDona Ana
Location0.6 Mi E Of Jct Nm-185
CarriesNm-320
CrossesIrrigation Canal
Coordinates32.38233, -106.82826

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length33.1 ft (10.1 m)
Max Span16.1 ft (4.9 m)
Deck Width22.0 ft (6.7 m)
Deck Area67.7 sq m
Main Spans2
Year Built1923

Traffic

Avg Daily Traffic2,605 (2023)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000002388

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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