304th ST over SR 18
Good Condition29 years old11,963 vehicles/day
Location
| State | Washington |
| County | King |
| Location | 4.6 E Jct SR 164 |
| Carries | 304th ST |
| Crosses | SR 18 |
| Coordinates | 47.33044, -122.15856 |
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 | 258.9 ft (78.9 m) |
| Max Span | 130.6 ft (39.8 m) |
| Deck Width | 55.8 ft (17 m) |
| Deck Area | 1341.3 sq m |
| Main Spans | 2 |
| Year Built | 1997 |
Traffic
| Avg Daily Traffic | 11,963 (2016) |
| Truck Traffic | 1% |
| Lanes On Bridge | 3 |
| Lanes Under Bridge | 5 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 0014776F0000000 |