Structure 17030E0000000 · King County, WA

SR 202 over Detention Vault

Carries SR 202 over Detention Vault, 2.0 E Jct SR 520.

Overall conditionGood

Set by its lowest-rated component: Culvert at 8 of 9.

How ratings work
Culvertsets the rating8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT251 FT ACROSS50 FT0ELEVATION · LENGTHS TO SCALE
Culvert 8/9

A culvert 251 ft across: about 3 semi-trucks nose to tail. Lengths and the semi-truck 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.

Built200719 years old
Length251.0 ft76.5 m
Daily traffic15,091counted 2023
Last inspectedMay 2024every 24 months

Location

StateWashington
CountyKing
Location2.0 E Jct SR 520
CarriesSR 202
CrossesDetention Vault
Coordinates47.65636, -122.07017

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length251.0 ft (76.5 m)
Max Span251.0 ft (76.5 m)
Deck Area1162.8 sq m
Main Spans1
Year Built2007

Traffic

Avg Daily Traffic15,091 (2023)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number0017030E0000000

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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