I-5 over Np Ry & Dillenbaugh CR
Fair Condition72 years old36,296 vehicles/day
Location
| State | Washington |
| County | Lewis |
| Location | 6.1 N Jct SR 508 |
| Carries | I-5 |
| Crosses | Np Ry & Dillenbaugh CR |
| Coordinates | 46.65086, -122.96925 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 537.1 ft (163.7 m) |
| Max Span | 92.8 ft (28.3 m) |
| Deck Width | 84.6 ft (25.8 m) |
| Deck Area | 4223.5 sq m |
| Main Spans | 1 |
| Year Built | 1954 (reconstructed 1986) |
Traffic
| Avg Daily Traffic | 36,296 (2023) |
| Truck Traffic | 21% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 0012597A0000000 |