Structure 1949A0000000 · Grays Harbor County, WA

US 12 over Wynoochee River

Carries US 12 over Wynoochee River, 8.3 E Jct US 101.

Overall conditionPoor

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

How ratings work
Decksets the rating3/9 · Serious
Superstructure4/9 · Poor
Substructure6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT286 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 3/9 · sets the ratingSuperstructure 4/9Substructure 6/9

286 ft end to end: 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 through truss.

Built193591 years old
Length286.1 ft87.2 m
Daily traffic21,466counted 2023
Last inspectedJune 2023every 24 months

Location

StateWashington
CountyGrays Harbor
Location8.3 E Jct US 101
CarriesUS 12
CrossesWynoochee River
Coordinates46.97658, -123.64394

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length286.1 ft (87.2 m)
Max Span200.1 ft (61 m)
Deck Width45.6 ft (13.9 m)
Deck Area1212.1 sq m
Main Spans1
Year Built1935

Traffic

Avg Daily Traffic21,466 (2023)
Truck Traffic6%
Lanes On Bridge4

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number0001949A0000000

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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