Il 99 over Swamp Ditch
Fair Condition87 years old400 vehicles/day
Location
| State | Illinois |
| County | Schuyler |
| Location | 1m S Il 101 |
| Carries | Il 99 |
| Crosses | Swamp Ditch |
| Coordinates | 40.20699, -90.77362 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 6 (Satisfactory) |
| Culvert | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 23.0 ft (7 m) |
| Max Span | 9.8 ft (3 m) |
| Deck Area | 59.5 sq m |
| Main Spans | 2 |
| Year Built | 1939 (reconstructed 1990) |
Traffic
| Avg Daily Traffic | 400 (2023) |
| Truck Traffic | 14% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 423 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 085201100000000 |