SR 20 over Transmt. Oil Pipeline
Good Condition54 years old19,145 vehicles/day
Location
| State | Washington |
| County | Skagit |
| Location | 12.1 E Island Co |
| Carries | SR 20 |
| Crosses | Transmt. Oil Pipeline |
| Coordinates | 48.44621, -122.45761 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 73.2 ft (22.3 m) |
| Max Span | 67.9 ft (20.7 m) |
| Deck Width | 38.1 ft (11.6 m) |
| Deck Area | 258.7 sq m |
| Main Spans | 1 |
| Year Built | 1972 |
Traffic
| Avg Daily Traffic | 19,145 (2023) |
| Truck Traffic | 6% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 321 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 0009353A0000000 |