SE 231st ST over SR 18
Fair Condition54 years old17,714 vehicles/day
Location
| State | Washington |
| County | King |
| Location | 4.3 E Jct SR 516 |
| Carries | SE 231st ST |
| Crosses | SR 18 |
| Coordinates | 47.39429, -122.04713 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Box Beam - Multiple |
| Total Length | 274.0 ft (83.5 m) |
| Max Span | 140.1 ft (42.7 m) |
| Deck Width | 77.8 ft (23.7 m) |
| Deck Area | 1979.0 sq m |
| Main Spans | 2 |
| Year Built | 1972 (reconstructed 2001) |
Traffic
| Avg Daily Traffic | 17,714 (2010) |
| Truck Traffic | 1% |
| Lanes On Bridge | 5 |
| Lanes Under Bridge | 4 |
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 | 0009289A0000000 |