Ill 4 & 15 over Kaskaskia Overflow
Fair Condition80 years old3,600 vehicles/day
Location
| State | Illinois |
| County | St. Clair |
| Location | 0.4 M E Jct Ill 4 |
| Carries | Ill 4 & 15 |
| Crosses | Kaskaskia Overflow |
| Coordinates | 38.37682, -89.78805 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 500.0 ft (152.4 m) |
| Max Span | 68.9 ft (21 m) |
| Deck Width | 35.1 ft (10.7 m) |
| Deck Area | 1630.7 sq m |
| Main Spans | 8 |
| Year Built | 1946 (reconstructed 1991) |
Traffic
| Avg Daily Traffic | 3,600 (2023) |
| Truck Traffic | 15% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 324 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 082007800000000 |