Structure 2504A0000000 · King County, WA

Bronson Way N over Cedar R

Carries Bronson Way N over Cedar R, 0.2 Mi E Jct SR 515.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT157 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

157 ft end to end: about 2 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.

Built194086 years old
Length157.2 ft47.9 m
Daily traffic22,000counted 2020
Last inspectedSeptember 2024every 24 months

Location

StateWashington
CountyKing
Location0.2 Mi E Jct SR 515
CarriesBronson Way N
CrossesCedar R
Coordinates47.48217, -122.20294

Physical Characteristics

MaterialSteel
DesignGirder and Floorbeam
Total Length157.2 ft (47.9 m)
Max Span104.0 ft (31.7 m)
Deck Width71.2 ft (21.7 m)
Deck Area1039.4 sq m
Main Spans1
Year Built1940

Traffic

Avg Daily Traffic22,000 (2020)
Truck Traffic4%
Lanes On Bridge5

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number0002504A0000000

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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