Structure 87604000000000 · Mason County, WA

Grapeview Loop RD over Mclane Cove

Carries Grapeview Loop RD over Mclane Cove, 2.45 E Jct SR 3.

Overall conditionGood

Set by its lowest-rated component: Deck at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT110 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

110 ft end to end. Lengths and the car 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.

Built200818 years old
Length109.9 ft33.5 m
Daily traffic835counted 2020
Last inspectedApril 2024every 24 months

Location

StateWashington
CountyMason
Location2.45 E Jct SR 3
CarriesGrapeview Loop RD
CrossesMclane Cove
Coordinates47.31603, -122.86772

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length109.9 ft (33.5 m)
Max Span106.0 ft (32.3 m)
Deck Width37.1 ft (11.3 m)
Deck Area378.6 sq m
Main Spans1
Year Built2008

Traffic

Avg Daily Traffic835 (2020)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number087604000000000

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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