SR 508 over Tilton River
Fair Condition79 years old2,232 vehicles/day
Location
| State | Washington |
| County | Lewis |
| Location | 32.4 E Jct I-5 |
| Carries | SR 508 |
| Crosses | Tilton River |
| Coordinates | 46.56087, -122.28544 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 4 (Poor) |
| Scour Critical | 7 — Countermeasures installed |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 201.1 ft (61.3 m) |
| Max Span | 100.1 ft (30.5 m) |
| Deck Width | 29.9 ft (9.1 m) |
| Deck Area | 557.8 sq m |
| Main Spans | 2 |
| Year Built | 1947 |
Traffic
| Avg Daily Traffic | 2,232 (2023) |
| Truck Traffic | 9% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 224 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 0003305A0000000 |