Structure 8228B0000000 · Adams County, WA

I-90 over Bnsf Railroad

Carries I-90 over Bnsf Railroad, 15.4 E Jct SR 261.

Overall conditionPoor

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

How ratings work
Deck7/9 · Good
Superstructure5/9 · Fair
Substructuresets the rating4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT309 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9Substructure 4/9 · sets the rating

309 ft end to end, longest span 101 ft: about 4 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 multi-beam bridge.

Built196858 years old
Length309.1 ft94.2 m
Daily traffic10,667counted 2023
Last inspectedMay 2023every 24 months

Location

StateWashington
CountyAdams
Location15.4 E Jct SR 261
CarriesI-90
CrossesBnsf Railroad
Coordinates47.24748, -118.11138

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length309.1 ft (94.2 m)
Max Span101.4 ft (30.9 m)
Deck Width36.4 ft (11.1 m)
Deck Area1045.6 sq m
Main Spans3
Year Built1968

Traffic

Avg Daily Traffic10,667 (2023)
Truck Traffic25%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number0008228B0000000

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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