Structure 7516 · Rio Arriba County, NM

Us-84/285 over Rio Grande

Carries Us-84/285 over Rio Grande, 0.3 Mi E Of Jct Nm30.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT948 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

948 ft end to end, longest span 85 ft: about 2.6 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.

Built198046 years old
Length948.2 ft289 m
Daily traffic8,194counted 2023
Last inspectedOctober 2023every 24 months

Location

StateNew Mexico
CountyRio Arriba
Location0.3 Mi E Of Jct Nm30
CarriesUs-84/285
CrossesRio Grande
Coordinates35.98828, -106.07401

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length948.2 ft (289 m)
Max Span85.0 ft (25.9 m)
Deck Width71.9 ft (21.9 m)
Deck Area6329.1 sq m
Main Spans11
Year Built1980

Traffic

Avg Daily Traffic8,194 (2023)
Truck Traffic12%
Lanes On Bridge4

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000007516

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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