Structure 87293000000000 · King County, WA

154th Place SE over Cedar River

Carries 154th Place SE over Cedar River, 0.1 Mile N Of Sr-169.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT406 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

406 ft end to end, longest span 203 ft: about 6 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 or the layout of the shorter spans, so those are drawn as typical for a girder bridge.

Built200521 years old
Length405.8 ft123.7 m
Daily traffic18,726counted 2021
Last inspectedMarch 2023every 24 months

Location

StateWashington
CountyKing
Location0.1 Mile N Of Sr-169
Carries154th Place SE
CrossesCedar River
Coordinates47.46761, -122.13669

Physical Characteristics

MaterialSteel
DesignGirder and Floorbeam
Total Length405.8 ft (123.7 m)
Max Span203.1 ft (61.9 m)
Deck Width48.9 ft (14.9 m)
Deck Area1843.1 sq m
Main Spans2
Year Built2005

Traffic

Avg Daily Traffic18,726 (2021)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number087293000000000

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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