SR 20 over Deception Pass
Fair Condition91 years old18,797 vehicles/day
Location
| State | Washington |
| County | Island |
| Location | 25.4 E Jct SR 525 |
| Carries | SR 20 |
| Crosses | Deception Pass |
| Coordinates | 48.40722, -122.64456 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 9 — Foundation above flood level |
Physical Characteristics
| Material | Steel |
| Design | Truss - Deck |
| Total Length | 976.0 ft (297.5 m) |
| Max Span | 549.9 ft (167.6 m) |
| Deck Width | 29.9 ft (9.1 m) |
| Deck Area | 2707.2 sq m |
| Main Spans | 3 |
| Year Built | 1935 |
Traffic
| Avg Daily Traffic | 18,797 (2023) |
| Truck Traffic | 6% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 223 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is on the National Register of Historic Places |
| Structure Number | 0001929A0000000 |