Structure AFW · Converse County, WY

I-25 Sbl over Bnsf Railway

Carries I-25 Sbl over Bnsf Railway, Douglas Marginal.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT120 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

120 ft end to end, longest span 46 ft. 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.

Built196759 years old
Length120.1 ft36.6 m
Daily traffic4,416counted 2024
Last inspectedApril 2023every 24 months

Location

StateWyoming
CountyConverse
LocationDouglas Marginal
CarriesI-25 Sbl
CrossesBnsf Railway
Coordinates42.73750, -105.38005

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length120.1 ft (36.6 m)
Max Span45.9 ft (14 m)
Deck Width40.7 ft (12.4 m)
Deck Area453.8 sq m
Main Spans3
Year Built1967

Traffic

Avg Daily Traffic4,416 (2024)
Truck Traffic25%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure NumberAFW

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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