Structure 6835A0000000 · Douglas County, WA

US 97 over Columbia River

Carries US 97 over Columbia River, 21.4 N Jct US 97 Spur.

Overall conditionPoor

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

How ratings work
Decksets the rating3/9 · Serious
Superstructure6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,227 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 3/9 · sets the ratingSuperstructure 6/9Substructure 7/9

1,227 ft end to end, longest span 520 ft: about 3.4 football fields. 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 through arch.

Built196264 years old
Length1227.0 ft374 m
Daily traffic5,821counted 2023
Last inspectedSeptember 2023every 24 months

Location

StateWashington
CountyDouglas
Location21.4 N Jct US 97 Spur
CarriesUS 97
CrossesColumbia River
Coordinates47.81291, -119.97194

Physical Characteristics

MaterialSteel Continuous
DesignArch - Thru
Total Length1227.0 ft (374 m)
Max Span520.0 ft (158.5 m)
Deck Width32.8 ft (10 m)
Deck Area3,740 sq m
Main Spans3
Year Built1962

Traffic

Avg Daily Traffic5,821 (2023)
Truck Traffic14%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical5 — Stable for scour
Structure Number0006835A0000000

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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