Structure 87458000000000 · King County, WA

Diablo ST over Stetattle Creek

Carries Diablo ST over Stetattle Creek, Diable Bunkhouse Entrance.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT95 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

95 ft end to end, longest span 89 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 through truss.

Built194185 years old
Length95.1 ft29 m
Daily traffic300counted 2022
Last inspectedAugust 2022every 24 months

Location

StateWashington
CountyKing
LocationDiable Bunkhouse Entrance
CarriesDiablo ST
CrossesStetattle Creek
Coordinates48.71720, -121.14976

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length95.1 ft (29 m)
Max Span88.9 ft (27.1 m)
Deck Width14.1 ft (4.3 m)
Deck Area124.7 sq m
Main Spans2
Year Built1941

Traffic

Avg Daily Traffic300 (2022)
Truck Traffic15%
Lanes On Bridge1

Inspection & Ownership

Last InspectionAugust 2022
Inspection FrequencyEvery 24 months
OwnerOther Local Agencies
Historical SignificanceHistorical significance is not determined
Scour CriticalUnknown
Structure Number087458000000000

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