Structure 8382G0000000 · King County, WA

SR 522 over E-n Ramp Br

Carries SR 522 over E-n Ramp Br, 1.3 E Jct SR 527.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT210 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

210 ft end to end, longest span 118 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 box-beam bridge.

Built1968rebuilt 1998
Length210.0 ft64 m
Daily traffic1,285counted 2023
Last inspectedJune 2023every 24 months

Location

StateWashington
CountyKing
Location1.3 E Jct SR 527
CarriesSR 522
CrossesE-n Ramp Br
Coordinates47.75772, -122.18358

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length210.0 ft (64 m)
Max Span118.1 ft (36 m)
Deck Width33.1 ft (10.1 m)
Deck Area646.4 sq m
Main Spans2
Year Built1968 (reconstructed 1998)

Traffic

Avg Daily Traffic1,285 (2023)
Truck Traffic5%
Lanes On Bridge1

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number0008382G0000000

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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