US 101 over Niawiakum River
Fair Condition35 years old3,145 vehicles/day
Location
| State | Washington |
| County | Pacific |
| Location | 14.8 N Jct SR 4 |
| Carries | US 101 |
| Crosses | Niawiakum River |
| Coordinates | 46.62794, -123.92314 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 1375.0 ft (419.1 m) |
| Max Span | 60.0 ft (18.3 m) |
| Deck Width | 39.0 ft (11.9 m) |
| Deck Area | 4987.3 sq m |
| Main Spans | 23 |
| Year Built | 1991 |
Traffic
| Avg Daily Traffic | 3,145 (2023) |
| Truck Traffic | 11% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 523 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | 0013743A0000000 |