Headworks Maintena over Crab Creek Siphon No. 1
Good Condition79 years old10 vehicles/day
Location
| State | Washington |
| County | Grant |
| Location | Crab Ck Siphon No. 1 Inle |
| Carries | Headworks Maintena |
| Crosses | Crab Creek Siphon No. 1 |
| Coordinates | 47.42206, -119.36889 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 8 (Very Good) |
| Culvert | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 22.3 ft (6.8 m) |
| Max Span | 22.3 ft (6.8 m) |
| Deck Width | 27.2 ft (8.3 m) |
| Deck Area | 56.4 sq m |
| Main Spans | 1 |
| Year Built | 1947 |
Traffic
| Avg Daily Traffic | 10 (2021) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2021 |
| Inspection Frequency | Every 48 months |
| Owner | Bureau of Reclamation |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 11ELC0051 |