Structure 7401C0000000 · King County, WA

Klickitat DR over I-5

Carries Klickitat DR over I-5, 5.0 N Jct SR 516.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating4/9 · Poor
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT189 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 4/9 · sets the ratingSubstructure 7/9

189 ft end to end, longest span 78 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.

Built196462 years old
Length189.0 ft57.6 m
Daily traffic15,000counted 2002
Last inspectedMarch 2024every 24 months

Location

StateWashington
CountyKing
Location5.0 N Jct SR 516
CarriesKlickitat DR
CrossesI-5
Coordinates47.45767, -122.26381

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length189.0 ft (57.6 m)
Max Span78.1 ft (23.8 m)
Deck Width57.7 ft (17.6 m)
Deck Area1013.8 sq m
Main Spans3
Year Built1964

Traffic

Avg Daily Traffic15,000 (2002)
Truck Traffic1%
Lanes On Bridge4
Lanes Under Bridge6

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number0007401C0000000

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.

Nearby Bridges