Structure 81929000000000 · Grays Harbor County, WA

South Bank Road over Rock Creek

Carries South Bank Road over Rock Creek, South Of Langabeer Road.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT138 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

138 ft end to end, longest span 29 ft. 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 slab bridge.

Built197155 years old
Length138.5 ft42.2 m
Daily traffic475counted 2020
Last inspectedNovember 2024every 24 months

Location

StateWashington
CountyGrays Harbor
LocationSouth Of Langabeer Road
CarriesSouth Bank Road
CrossesRock Creek
Coordinates46.87333, -123.29903

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length138.5 ft (42.2 m)
Max Span28.9 ft (8.8 m)
Deck Width27.9 ft (8.5 m)
Deck Area358.7 sq m
Main Spans5
Year Built1971

Traffic

Avg Daily Traffic475 (2020)
Truck Traffic21%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical3 — Scour critical
Structure Number081929000000000

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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