Structure 4788A0000000 · Snohomish County, WA

SR 529 over SR 529/e Marine View DR

Carries SR 529 over SR 529/e Marine View DR, 4.5 N Jct SR 529 Spur.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT64 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

64 ft end to end, longest span 31 ft. 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 slab bridge.

Built195571 years old
Length64.0 ft19.5 m
Daily traffic16,286counted 2023
Last inspectedAugust 2024every 24 months

Location

StateWashington
CountySnohomish
Location4.5 N Jct SR 529 Spur
CarriesSR 529
CrossesSR 529/e Marine View DR
Coordinates48.01125, -122.19042

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length64.0 ft (19.5 m)
Max Span30.8 ft (9.4 m)
Deck Width49.5 ft (15.1 m)
Deck Area294.4 sq m
Main Spans2
Year Built1955

Traffic

Avg Daily Traffic16,286 (2023)
Truck Traffic6%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number0004788A0000000

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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