Structure MA0000000 · King County, WA

102nd AVE over State Route 522

Carries 102nd AVE over State Route 522, 0.2 E Jct SR 527.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 1 of 9.

How ratings work
Deck4/9 · Poor
Superstructuresets the rating1/9 · Imminent Failure
Substructure5/9 · Fair
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT247 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9Superstructure 1/9 · sets the ratingSubstructure 5/9

247 ft end to end, longest span 60 ft: about 3 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 multi-beam bridge.

Built195076 years old
Length247.0 ft75.3 m
Daily traffic9,464counted 2024
Last inspectedSeptember 2024every 24 months

Location

StateWashington
CountyKing
Location0.2 E Jct SR 527
Carries102nd AVE
CrossesState Route 522
Coordinates47.75872, -122.20379

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length247.0 ft (75.3 m)
Max Span60.0 ft (18.3 m)
Deck Width33.1 ft (10.1 m)
Deck Area760.5 sq m
Main Spans3
Year Built1950

Traffic

Avg Daily Traffic9,464 (2024)
Truck Traffic7%
Lanes On Bridge2
Lanes Under Bridge4

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 Number000000MA0000000

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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