Structure 81058000000000 · Chelan County, WA

Co RD 47670 over Entiat River

Carries Co RD 47670 over Entiat River, 0.06s Jct Entiat River RD.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT124 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 124 ft across. 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, so those are drawn as typical for a culvert.

Built1921105 years old
Length124.0 ft37.8 m
Daily traffic5,957counted 2022
Last inspectedOctober 2024every 24 months

Location

StateWashington
CountyChelan
Location0.06s Jct Entiat River RD
CarriesCo RD 47670
CrossesEntiat River
Coordinates47.67167, -120.30333

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length124.0 ft (37.8 m)
Max Span89.9 ft (27.4 m)
Deck Width22.0 ft (6.7 m)
Deck Area253.3 sq m
Main Spans1
Year Built1921

Traffic

Avg Daily Traffic5,957 (2022)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number081058000000000

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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