SR 509 over Des Moines Ck/mem Trail
Good Condition19 years old19,398 vehicles/day
Location
| State | Washington |
| County | King |
| Location | 0.8 N Jct SR 516 |
| Carries | SR 509 |
| Crosses | Des Moines Ck/mem Trail |
| Coordinates | 47.40811, -122.32592 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 82.3 ft (25.1 m) |
| Max Span | 75.8 ft (23.1 m) |
| Deck Width | 65.6 ft (20 m) |
| Deck Area | 502 sq m |
| Main Spans | 1 |
| Year Built | 2007 |
Traffic
| Avg Daily Traffic | 19,398 (2023) |
| Truck Traffic | 4% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | 224 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | 002003880000000 |