Structure 81773000000000 · Grays Harbor County, WA

Middle Satsop Road over West Fork Satsop River

Carries Middle Satsop Road over West Fork Satsop River, 3.5 N Brady.

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT350 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

350 ft end to end, longest span 130 ft: about 5 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.

Built198541 years old
Length350.1 ft106.7 m
Daily traffic1,429counted 2022
Last inspectedJanuary 2023every 24 months

Location

StateWashington
CountyGrays Harbor
Location3.5 N Brady
CarriesMiddle Satsop Road
CrossesWest Fork Satsop River
Coordinates47.04361, -123.52444

Physical Characteristics

MaterialConcrete
DesignBox Beam - Multiple
Total Length350.1 ft (106.7 m)
Max Span129.9 ft (39.6 m)
Deck Width37.4 ft (11.4 m)
Deck Area1216.4 sq m
Main Spans3
Year Built1985

Traffic

Avg Daily Traffic1,429 (2022)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number081773000000000

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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