Structure 8175E0000000 · King County, WA

SR 167 over Np Ry

Carries SR 167 over Np Ry, 1.4 N Jct SR 516.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT314 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 7/9

314 ft end to end, longest span 138 ft: about 4 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.

Built1967rebuilt 1998
Length314.0 ft95.7 m
Daily traffic61,426counted 2023
Last inspectedMay 2023every 24 months

Location

StateWashington
CountyKing
Location1.4 N Jct SR 516
CarriesSR 167
CrossesNp Ry
Coordinates47.39501, -122.23316

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length314.0 ft (95.7 m)
Max Span138.1 ft (42.1 m)
Deck Width58.7 ft (17.9 m)
Deck Area1713.0 sq m
Main Spans3
Year Built1967 (reconstructed 1998)

Traffic

Avg Daily Traffic61,426 (2023)
Truck Traffic7%
Lanes On Bridge3

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number0008175E0000000

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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