Structure 7156B0000000 · King County, WA

NE 80th ST over I-5 I-5 Exp Lns Ramps

Carries NE 80th ST over I-5 I-5 Exp Lns Ramps, 0.4 N Jct SR 522.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT302 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

302 ft end to end, longest span 96 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 box-beam bridge.

Built196462 years old
Length301.5 ft91.9 m
Daily traffic31,375counted 2021
Last inspectedMay 2023every 24 months

Location

StateWashington
CountyKing
Location0.4 N Jct SR 522
CarriesNE 80th ST
CrossesI-5 I-5 Exp Lns Ramps
Coordinates47.68682, -122.32686

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length301.5 ft (91.9 m)
Max Span95.8 ft (29.2 m)
Deck Width39.7 ft (12.1 m)
Deck Area1112.0 sq m
Main Spans4
Year Built1964

Traffic

Avg Daily Traffic31,375 (2021)
Truck Traffic6%
Lanes On Bridge2
Lanes Under Bridge11

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 Number0007156B0000000

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