SR 520 W-n Ramp over Sammamish Pkwy/river
Good Condition16 years old3,902 vehicles/day
Location
| State | Washington |
| County | King |
| Location | 4.9 E Jct I-405 |
| Carries | SR 520 W-n Ramp |
| Crosses | Sammamish Pkwy/river |
| Coordinates | 47.66736, -122.12744 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 399.9 ft (121.9 m) |
| Max Span | 131.9 ft (40.2 m) |
| Deck Width | 28.9 ft (8.8 m) |
| Deck Area | 1072.7 sq m |
| Main Spans | 4 |
| Year Built | 2010 |
Traffic
| Avg Daily Traffic | 3,902 (2012) |
| Truck Traffic | 3% |
| Lanes On Bridge | 1 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | 0017637A0000000 |