Structure 88138000000000 · King County, WA

SE 416th ST over Newaukum Creek

Carries SE 416th ST over Newaukum Creek, 0.6 Mi E Of Sr-169.

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 overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT41 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 7/9 · sets the ratingSubstructure 8/9

41 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.

Built200917 years old
Length41.0 ft12.5 m
Daily traffic1,874counted 2019
Last inspectedJuly 2023every 24 months

Location

StateWashington
CountyKing
Location0.6 Mi E Of Sr-169
CarriesSE 416th ST
CrossesNewaukum Creek
Coordinates47.22833, -121.97684

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length41.0 ft (12.5 m)
Max Span38.1 ft (11.6 m)
Deck Width32.2 ft (9.8 m)
Deck Area122.5 sq m
Main Spans1
Year Built2009

Traffic

Avg Daily Traffic1,874 (2019)
Truck Traffic12%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number088138000000000

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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