SR 9 over Thunder Creek
Fair Condition126 years old3,684 vehicles/day
Location
| State | Washington |
| County | Skagit |
| Location | 6.3 N Jct SR 20 |
| Carries | SR 9 |
| Crosses | Thunder Creek |
| Coordinates | 48.59978, -122.23192 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 7 — Countermeasures installed |
Physical Characteristics
| Material | Concrete |
| Design | Tee Beam |
| Total Length | 30.8 ft (9.4 m) |
| Max Span | 29.9 ft (9.1 m) |
| Deck Width | 28.5 ft (8.7 m) |
| Deck Area | 81.8 sq m |
| Main Spans | 1 |
| Year Built | 1900 (reconstructed 1947) |
Traffic
| Avg Daily Traffic | 3,684 (2023) |
| Truck Traffic | 12% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 423 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 0003349A0000000 |