SR 99 over SR 518 Riverton Hts
Fair Condition64 years old33,632 vehicles/day
Location
| State | Washington |
| County | King |
| Location | 4.9 N Jct SR 516 |
| Carries | SR 99 |
| Crosses | SR 518 Riverton Hts |
| Coordinates | 47.46303, -122.29011 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 324.1 ft (98.8 m) |
| Max Span | 97.1 ft (29.6 m) |
| Deck Width | 90.6 ft (27.6 m) |
| Deck Area | 2726.9 sq m |
| Main Spans | 4 |
| Year Built | 1962 (reconstructed 2011) |
Traffic
| Avg Daily Traffic | 33,632 (2023) |
| Truck Traffic | 9% |
| Lanes On Bridge | 6 |
| Lanes Under Bridge | 10 |
Inspection & Ownership
| Last Inspection | 324 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 0007046A0000000 |