Structure 8598 · San Miguel County, NM

Nm-65 over Hill Side

Carries Nm-65 over Hill Side, 5.1 Mi NW Of Mills AVE.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT641 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

641 ft end to end, longest span 20 ft: about 1.8 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 slab bridge.

Built199036 years old
Length641.1 ft195.4 m
Daily traffic81counted 2023
Last inspectedJuly 2024every 24 months

Location

StateNew Mexico
CountySan Miguel
Location5.1 Mi NW Of Mills AVE
CarriesNm-65
CrossesHill Side
Coordinates35.65263, -105.28235

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length641.1 ft (195.4 m)
Max Span20.0 ft (6.1 m)
Deck Width39.0 ft (11.9 m)
Deck Area2325.3 sq m
Main Spans17
Year Built1990

Traffic

Avg Daily Traffic81 (2023)
Truck Traffic11%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000008598

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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