Structure 9021B0000000 · Snohomish County, WA

5th AVE over SR 104 WB

Carries 5th AVE over SR 104 WB, 1.0 E Jct SR 524.

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 FT53 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

53 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.

Built197155 years old
Length53.1 ft16.2 m
Daily traffic8,999counted 2012
Last inspectedAugust 2023every 24 months

Location

StateWashington
CountySnohomish
Location1.0 E Jct SR 524
Carries5th AVE
CrossesSR 104 WB
Coordinates47.79969, -122.37758

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length53.1 ft (16.2 m)
Max Span48.9 ft (14.9 m)
Deck Width63.3 ft (19.3 m)
Deck Area312.7 sq m
Main Spans1
Year Built1971

Traffic

Avg Daily Traffic8,999 (2012)
Truck Traffic8%
Lanes On Bridge2
Lanes Under Bridge1

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number0009021B0000000

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.

Nearby Bridges