Structure 6080A0000000 · King County, WA
Carries I-5 over Lake Wash Ship Canal, 0.7 N Jct SR 520.
Set by its lowest-rated component: Deck and Superstructure at 6 of 9.
How ratings work4,429 ft end to end, longest span 552 ft: about 12 football fields. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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 deck truss.
| State | Washington |
| County | King |
| Location | 0.7 N Jct SR 520 |
| Carries | I-5 |
| Crosses | Lake Wash Ship Canal |
| Coordinates | 47.64630, -122.32246 |
| Material | Steel Continuous |
| Design | Truss - Deck |
| Total Length | 4429.1 ft (1,350 m) |
| Max Span | 551.8 ft (168.2 m) |
| Deck Width | 182.1 ft (55.5 m) |
| Deck Area | 74,925 sq m |
| Main Spans | 6 |
| Year Built | 1962 |
| Avg Daily Traffic | 90,986 (2023) |
| Truck Traffic | 5% |
| Lanes On Bridge | 12 |
| Lanes Under Bridge | 14 |
| Last Inspection | July 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 0006080A0000000 |
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."
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.