Structure 8997 · Santa Fe County, NM

Us-84/285/sfcr 84j over Rio Nambe

Carries Us-84/285/sfcr 84j over Rio Nambe, US 84/285 & Nm 503 Jct..

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT176 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

176 ft end to end, longest span 58 ft: about 2 semi-trucks nose to tail. 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 box-beam bridge.

Built200125 years old
Length175.5 ft53.5 m
Daily traffic23,367counted 2023
Last inspectedNovember 2023every 24 months

Location

StateNew Mexico
CountySanta Fe
LocationUS 84/285 & Nm 503 Jct.
CarriesUs-84/285/sfcr 84j
CrossesRio Nambe
Coordinates35.89670, -106.02138

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length175.5 ft (53.5 m)
Max Span57.7 ft (17.6 m)
Deck Width173.9 ft (53 m)
Deck Area2835.5 sq m
Main Spans3
Year Built2001

Traffic

Avg Daily Traffic23,367 (2023)
Truck Traffic17%
Lanes On Bridge9

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000008997

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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