Structure 88536000000000 · King County, WA

Klickitat Drive over SB Southcenter PKWY

Carries Klickitat Drive over SB Southcenter PKWY, At Southcenter Parkway.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT31 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 8/9

31 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.

Built201214 years old
Length30.8 ft9.4 m
Daily traffic14,024counted 2018
Last inspectedApril 2023every 24 months

Location

StateWashington
CountyKing
LocationAt Southcenter Parkway
CarriesKlickitat Drive
CrossesSB Southcenter PKWY
Coordinates47.45749, -122.26265

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length30.8 ft (9.4 m)
Max Span29.9 ft (9.1 m)
Deck Width100.1 ft (30.5 m)
Deck Area286.7 sq m
Main Spans1
Year Built2012

Traffic

Avg Daily Traffic14,024 (2018)
Truck Traffic2%
Lanes On Bridge3
Lanes Under Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number088536000000000

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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