Structure 18625A0000000 · King County, WA
Carries SR 520 over Lake Washington, 0.7 E Jct SR 513.
5,968 ft end to end, longest span 160 ft: about 17 football fields, or 1.1 miles. 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 multi-beam bridge.
| State | Washington |
| County | King |
| Location | 0.7 E Jct SR 513 |
| Carries | SR 520 |
| Crosses | Lake Washington |
| Coordinates | 47.64518, -122.29929 |
| Material | Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 5967.8 ft (1,819 m) |
| Max Span | 160.1 ft (48.8 m) |
| Deck Width | 78.4 ft (23.9 m) |
| Deck Area | 43474.1 sq m |
| Main Spans | 41 |
| Year Built | 2017 |
| Avg Daily Traffic | 19,472 (2023) |
| Truck Traffic | 3% |
| Lanes On Bridge | 4 |
| Last Inspection | August 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 0018625A0000000 |
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.