Structure 82152000000000 · Columbia County, WA

Rose Gulch Road over Touchet River

Carries Rose Gulch Road over Touchet River, 0.2 N Jct SR 12.

Overall conditionPoor

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

How ratings work
Decksets the rating3/9 · Serious
Superstructure5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT160 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 3/9 · sets the ratingSuperstructure 5/9Substructure 6/9

160 ft end to end, longest span 79 ft: about 2 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.

Built196363 years old
Length160.1 ft48.8 m
Daily traffic150counted 2019
Last inspectedOctober 2023every 24 months

Location

StateWashington
CountyColumbia
Location0.2 N Jct SR 12
CarriesRose Gulch Road
CrossesTouchet River
Coordinates46.29011, -118.04497

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length160.1 ft (48.8 m)
Max Span79.1 ft (24.1 m)
Deck Width20.7 ft (6.3 m)
Deck Area307.4 sq m
Main Spans2
Year Built1963

Traffic

Avg Daily Traffic150 (2019)
Truck Traffic40%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical3 — Scour critical
Structure Number082152000000000

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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