S 156th ST over SR 509
Good Condition56 years old8,754 vehicles/day
Location
| State | Washington |
| County | King |
| Location | 6.5 N Jct SR 516 |
| Carries | S 156th ST |
| Crosses | SR 509 |
| Coordinates | 47.46331, -122.33200 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 8 (Very Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 243.1 ft (74.1 m) |
| Max Span | 65.0 ft (19.8 m) |
| Deck Width | 55.8 ft (17 m) |
| Deck Area | 1259.7 sq m |
| Main Spans | 4 |
| Year Built | 1970 |
Traffic
| Avg Daily Traffic | 8,754 (2010) |
| Truck Traffic | 4% |
| Lanes On Bridge | 3 |
| Lanes Under Bridge | 4 |
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 | 0008745B0000000 |