Grdn Hamilton/4510 over Cottonwood Creek
Good Condition26 years old50 vehicles/day
Location
| State | Washington |
| County | Whitman |
| Location | 0.07 Mi S SR 23 |
| Carries | Grdn Hamilton/4510 |
| Crosses | Cottonwood Creek |
| Coordinates | 47.10540, -117.63123 |
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 | Stringer/Multi-beam |
| Total Length | 62.0 ft (18.9 m) |
| Max Span | 60.0 ft (18.3 m) |
| Deck Width | 28.5 ft (8.7 m) |
| Deck Area | 164.4 sq m |
| Main Spans | 1 |
| Year Built | 2000 |
Traffic
| Avg Daily Traffic | 50 (2020) |
| Truck Traffic | 25% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 086576000000000 |