Tr-485 over Trib Atchison Creek
Good Condition51 years old350 vehicles/day
Location
| State | Illinois |
| County | Jefferson |
| Location | 0.5 Mi S Bonnie |
| Carries | Tr-485 |
| Crosses | Trib Atchison Creek |
| Coordinates | 38.18402, -88.90211 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 6 (Satisfactory) |
| Culvert | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 29.9 ft (9.1 m) |
| Max Span | 14.8 ft (4.5 m) |
| Deck Area | 77.3 sq m |
| Main Spans | 2 |
| Year Built | 1975 |
Traffic
| Avg Daily Traffic | 350 (2021) |
| Truck Traffic | 20% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 125 |
| Inspection Frequency | Every 24 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 041500200000000 |