Structure 85005000000000 · Grays Harbor County, WA

Overlake ST over Duck Lake

Carries Overlake ST over Duck Lake, 0.1 W Duck Lake DR.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT133 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 7/9Substructure 5/9 · sets the rating

133 ft end to end, longest span 31 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 multi-beam bridge.

Built197056 years old
Length132.9 ft40.5 m
Daily traffic352counted 2019
Last inspectedSeptember 2023every 24 months

Location

StateWashington
CountyGrays Harbor
Location0.1 W Duck Lake DR
CarriesOverlake ST
CrossesDuck Lake
Coordinates46.98881, -124.14628

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length132.9 ft (40.5 m)
Max Span30.8 ft (9.4 m)
Deck Width32.2 ft (9.8 m)
Deck Area396.9 sq m
Main Spans5
Year Built1970

Traffic

Avg Daily Traffic352 (2019)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number085005000000000

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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