Structure 5999A0000000 · Adams County, WA

SR 26 over Providence Coulee

Carries SR 26 over Providence Coulee, 15.0 E Jct SR 17.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT258 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 3/9 · sets the ratingSuperstructure 6/9Substructure 7/9

258 ft end to end, longest span 97 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.

Built195967 years old
Length257.9 ft78.6 m
Daily traffic1,997counted 2023
Last inspectedFebruary 2024every 24 months

Location

StateWashington
CountyAdams
Location15.0 E Jct SR 17
CarriesSR 26
CrossesProvidence Coulee
Coordinates46.79333, -118.82000

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length257.9 ft (78.6 m)
Max Span97.1 ft (29.6 m)
Deck Width32.5 ft (9.9 m)
Deck Area778.1 sq m
Main Spans3
Year Built1959

Traffic

Avg Daily Traffic1,997 (2023)
Truck Traffic21%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number0005999A0000000

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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