Structure 81327000000000 · Clallam County, WA

Quillayute Road over Sol Duc River

Carries Quillayute Road over Sol Duc River, 3.4 W Jct Sr101.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT224 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

224 ft end to end: about 3 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 through truss.

Built196264 years old
Length224.1 ft68.3 m
Daily traffic452counted 2022
Last inspectedJanuary 2024every 24 months

Location

StateWashington
CountyClallam
Location3.4 W Jct Sr101
CarriesQuillayute Road
CrossesSol Duc River
Coordinates47.95119, -124.46833

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length224.1 ft (68.3 m)
Max Span149.9 ft (45.7 m)
Deck Width21.3 ft (6.5 m)
Deck Area443.9 sq m
Main Spans1
Year Built1962

Traffic

Avg Daily Traffic452 (2022)
Truck Traffic25%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number081327000000000

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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