Structure 9658 · Grant County, NM

Nm-90 over San Vicente Arroyo/road

Carries Nm-90 over San Vicente Arroyo/road, 41.4 Mi E Of Jct Us-70.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT549 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

549 ft end to end, longest span 118 ft: about 1.5 football fields. 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.

Built201610 years old
Length548.9 ft167.3 m
Daily traffic8,412counted 2023
Last inspectedSeptember 2024every 24 months

Location

StateNew Mexico
CountyGrant
Location41.4 Mi E Of Jct Us-70
CarriesNm-90
CrossesSan Vicente Arroyo/road
Coordinates32.76538, -108.27509

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length548.9 ft (167.3 m)
Max Span117.8 ft (35.9 m)
Deck Width64.6 ft (19.7 m)
Deck Area3295.8 sq m
Main Spans5
Year Built2016

Traffic

Avg Daily Traffic8,412 (2023)
Truck Traffic12%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000009658

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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