Structure 5789A0000000 · Adams County, WA

US 395 Ramp over I-90

Carries US 395 Ramp over I-90, 13.6 N Jct SR 21.

Overall conditionPoor

Set by its lowest-rated component: Deck at 3 of 9.

How ratings work
Decksets the rating3/9 · Serious
Superstructure6/9 · Satisfactory
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT308 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 3/9 · sets the ratingSuperstructure 6/9Substructure 6/9

308 ft end to end, longest span 73 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 box-beam bridge.

Built195868 years old
Length308.1 ft93.9 m
Daily traffic1,360counted 2016
Last inspectedOctober 2024every 24 months

Location

StateWashington
CountyAdams
Location13.6 N Jct SR 21
CarriesUS 395 Ramp
CrossesI-90
Coordinates47.11094, -118.39547

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length308.1 ft (93.9 m)
Max Span73.2 ft (22.3 m)
Deck Width36.7 ft (11.2 m)
Deck Area1051.7 sq m
Main Spans5
Year Built1958

Traffic

Avg Daily Traffic1,360 (2016)
Truck Traffic32%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number0005789A0000000

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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