Structure AYG · Laramie County, WY

I-80 Wbl over Wyo 218

Carries I-80 Wbl over Wyo 218, Laramie - Cheyenne.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT104 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

104 ft end to end, longest span 40 ft. Lengths and the car 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.

Built195967 years old
Length104.0 ft31.7 m
Daily traffic7,107counted 2024
Last inspectedMarch 2024every 24 months

Location

StateWyoming
CountyLaramie
LocationLaramie - Cheyenne
CarriesI-80 Wbl
CrossesWyo 218
Coordinates41.09734, -105.17187

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length104.0 ft (31.7 m)
Max Span40.0 ft (12.2 m)
Deck Width43.0 ft (13.1 m)
Deck Area415.3 sq m
Main Spans3
Year Built1959

Traffic

Avg Daily Traffic7,107 (2024)
Truck Traffic50%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

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

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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