Structure 13663A0000000 · Kitsap County, WA

SR 304 over Sinclair Inlet

Carries SR 304 over Sinclair Inlet, 0.4 E Jct SR 303.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT105 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

105 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 lift bridge (drawn closed).

Built199036 years old
Length105.0 ft32 m
Daily traffic3,600counted 2010
Last inspectedMay 2023every 24 months

Location

StateWashington
CountyKitsap
Location0.4 E Jct SR 303
CarriesSR 304
CrossesSinclair Inlet
Coordinates47.56203, -122.62517

Physical Characteristics

MaterialSteel
DesignMovable - Lift
Total Length105.0 ft (32 m)
Max Span80.1 ft (24.4 m)
Deck Width24.9 ft (7.6 m)
Deck Area243.2 sq m
Main Spans1
Year Built1990

Traffic

Avg Daily Traffic3,600 (2010)
Truck Traffic1%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical3 — Scour critical
Structure Number0013663A0000000

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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