Structure 82561000000000 · King County, WA

Landsburg Road over Cedar River

Carries Landsburg Road over Cedar River, 1.5 Mi N Kent Kangl RD.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · 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 FT132 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

132 ft end to end. 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 multi-beam bridge.

Built198244 years old
Length131.9 ft40.2 m
Daily traffic5,335counted 2020
Last inspectedMay 2024every 24 months

Location

StateWashington
CountyKing
Location1.5 Mi N Kent Kangl RD
CarriesLandsburg Road
CrossesCedar River
Coordinates47.37464, -121.97160

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length131.9 ft (40.2 m)
Max Span126.0 ft (38.4 m)
Deck Width41.0 ft (12.5 m)
Deck Area502.5 sq m
Main Spans1
Year Built1982

Traffic

Avg Daily Traffic5,335 (2020)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number082561000000000

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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