SR 20 over Coal Creek
Good Condition78 years old9,612 vehicles/day
Location
| State | Washington |
| County | Skagit |
| Location | 3.9 E Jct SR 9 |
| Carries | SR 20 |
| Crosses | Coal Creek |
| Coordinates | 48.53102, -122.15028 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 4 — Foundations need monitoring |
Physical Characteristics
| Material | Concrete |
| Design | Tee Beam |
| Total Length | 38.1 ft (11.6 m) |
| Max Span | 37.1 ft (11.3 m) |
| Deck Width | 40.0 ft (12.2 m) |
| Deck Area | 141.5 sq m |
| Main Spans | 1 |
| Year Built | 1948 |
Traffic
| Avg Daily Traffic | 9,612 (2023) |
| Truck Traffic | 9% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 0003478B0000000 |