SR 20 over Bonaparte CR
Good Condition26 years old1,755 vehicles/day
Location
| State | Washington |
| County | Okanogan |
| Location | 4.6 E Jct US 97 |
| Carries | SR 20 |
| Crosses | Bonaparte CR |
| Coordinates | 48.67217, -119.35794 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Slab |
| Total Length | 66.9 ft (20.4 m) |
| Max Span | 66.9 ft (20.4 m) |
| Deck Width | 36.1 ft (11 m) |
| Deck Area | 224.4 sq m |
| Main Spans | 1 |
| Year Built | 2000 |
Traffic
| Avg Daily Traffic | 1,755 (2023) |
| Truck Traffic | 11% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 821 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | 0015877A0000000 |