Structure 85736000000000 · Snohomish County, WA

Oakes Avenue over Burlington Northern Rr

Carries Oakes Avenue over Burlington Northern Rr, 0.1mi N. Of Hewitt.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT94 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

94 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 tee-beam bridge.

Built198937 years old
Length94.5 ft28.8 m
Daily traffic1,312counted 2022
Last inspectedApril 2023every 24 months

Location

StateWashington
CountySnohomish
Location0.1mi N. Of Hewitt
CarriesOakes Avenue
CrossesBurlington Northern Rr
Coordinates47.97972, -122.20444

Physical Characteristics

MaterialPrestressed Concrete
DesignTee Beam
Total Length94.5 ft (28.8 m)
Max Span76.4 ft (23.3 m)
Deck Width75.1 ft (22.9 m)
Deck Area659.5 sq m
Main Spans1
Year Built1989

Traffic

Avg Daily Traffic1,312 (2022)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number085736000000000

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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