Structure FX0000000 · Snohomish County, WA

Old Sr9 over Pilchuck CR

Carries Old Sr9 over Pilchuck CR, 0.2 NE Jct Sr9.

Overall conditionFair

Set by its lowest-rated component: Culvert at 5 of 9.

How ratings work
Culvertsets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT115 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 5/9

A culvert 115 ft across with 2 openings. 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, so those are drawn as typical for a culvert.

Built1916110 years old
Length115.2 ft35.1 m
Daily traffic63counted 2021
Last inspectedAugust 2024every 24 months

Location

StateWashington
CountySnohomish
Location0.2 NE Jct Sr9
CarriesOld Sr9
CrossesPilchuck CR
Coordinates48.26511, -122.16544

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length115.2 ft (35.1 m)
Max Span60.0 ft (18.3 m)
Deck Width18.0 ft (5.5 m)
Deck Area193.1 sq m
Main Spans2
Year Built1916

Traffic

Avg Daily Traffic63 (2021)
Truck Traffic8%
Lanes On Bridge1

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000FX0000000

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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