SR 509 over Des Moines Memorial
Good Condition47 years old14,997 vehicles/day
Location
| State | Washington |
| County | King |
| Location | 5.8 N Jct SR 516 |
| Carries | SR 509 |
| Crosses | Des Moines Memorial |
| Coordinates | 47.45378, -122.32583 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 299.9 ft (91.4 m) |
| Max Span | 134.8 ft (41.1 m) |
| Deck Width | 91.9 ft (28 m) |
| Deck Area | 2559.2 sq m |
| Main Spans | 3 |
| Year Built | 1979 |
Traffic
| Avg Daily Traffic | 14,997 (2023) |
| Truck Traffic | 5% |
| Lanes On Bridge | 4 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 0011070C0000000 |