Byrnes RD over Nine Mile Canyon
Fair Condition110 years old30 vehicles/day
Location
| State | Washington |
| County | Walla Walla |
| Location | 00.13 E SR 12(w) |
| Carries | Byrnes RD |
| Crosses | Nine Mile Canyon |
| Coordinates | 46.07083, -118.78222 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Other |
| Total Length | 44.9 ft (13.7 m) |
| Max Span | 44.9 ft (13.7 m) |
| Deck Width | 22.3 ft (6.8 m) |
| Deck Area | 93.2 sq m |
| Main Spans | 1 |
| Year Built | 1916 |
Traffic
| Avg Daily Traffic | 30 (2021) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 923 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 083071000000000 |