Ill 161 over Overflow Silver CR
Fair Condition94 years old4,950 vehicles/day
Location
| State | Illinois |
| County | St. Clair |
| Location | 1.8 M E Ill 158 |
| Carries | Ill 161 |
| Crosses | Overflow Silver CR |
| Coordinates | 38.52549, -89.83396 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 125.7 ft (38.3 m) |
| Max Span | 41.3 ft (12.6 m) |
| Deck Width | 35.1 ft (10.7 m) |
| Deck Area | 409.8 sq m |
| Main Spans | 3 |
| Year Built | 1932 (reconstructed 1980) |
Traffic
| Avg Daily Traffic | 4,950 (2023) |
| Truck Traffic | 9% |
| 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 | 082009400000000 |