Gridley Colusa HWY over Lateral D Canal
Good Condition104 years old524 vehicles/day
Location
| State | California |
| County | Butte |
| Location | 2.8 Mi E/o Colusa |
| Carries | Gridley Colusa HWY |
| Crosses | Lateral D Canal |
| Coordinates | 39.36216, -121.84107 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Tee Beam |
| Total Length | 25.9 ft (7.9 m) |
| Max Span | 24.9 ft (7.6 m) |
| Deck Width | 28.5 ft (8.7 m) |
| Deck Area | 68.7 sq m |
| Main Spans | 1 |
| Year Built | 1922 (reconstructed 1949) |
Traffic
| Avg Daily Traffic | 524 (2019) |
| Truck Traffic | 19% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 48 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 12C0012 |