Structure ABQ · Laramie County, WY

I-25 Nbl over US 85

Carries I-25 Nbl over US 85, Cheyenne - Chugwater.

Overall conditionPoor

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

How ratings work
Decksets the rating4/9 · Poor
Superstructure5/9 · Fair
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT241 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 5/9Substructure 6/9

241 ft end to end, longest span 90 ft: about 3 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 tee-beam bridge.

Built195769 years old
Length241.5 ft73.6 m
Daily traffic6,108counted 2024
Last inspectedMarch 2024every 24 months

Location

StateWyoming
CountyLaramie
LocationCheyenne - Chugwater
CarriesI-25 Nbl
CrossesUS 85
Coordinates41.23258, -104.83764

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length241.5 ft (73.6 m)
Max Span89.9 ft (27.4 m)
Deck Width35.1 ft (10.7 m)
Deck Area787.5 sq m
Main Spans3
Year Built1957

Traffic

Avg Daily Traffic6,108 (2024)
Truck Traffic18%
Lanes On Bridge2
Lanes Under Bridge1

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure NumberABQ

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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