Structure 60506000003008 · King County, WA

Road over Burns Creek

Carries Road over Burns Creek, 0.24 Mi S Of 68/6835 Jct.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT56 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 7/9 · sets the ratingSubstructure 8/9

56 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 slab bridge.

Built199927 years old
Length56.1 ft17.1 m
Daily traffic60counted 1992
Last inspectedJuly 2021every 48 months

Location

StateWashington
CountyKing
Location0.24 Mi S Of 68/6835 Jct
CarriesRoad
CrossesBurns Creek
Coordinates47.65438, -121.28555

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length56.1 ft (17.1 m)
Max Span55.1 ft (16.8 m)
Deck Width16.1 ft (4.9 m)
Deck Area83.8 sq m
Main Spans1
Year Built1999

Traffic

Avg Daily Traffic60 (1992)
Lanes On Bridge1

Inspection & Ownership

Last InspectionJuly 2021
Inspection FrequencyEvery 48 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number060506000003008

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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