Il 138 over Cahokia Creek
Good Condition24 years old1,000 vehicles/day
Location
| State | Illinois |
| County | Macoupin |
| Location | 0.1 Mi W Wilsonville |
| Carries | Il 138 |
| Crosses | Cahokia Creek |
| Coordinates | 39.07090, -89.86405 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 83.7 ft (25.5 m) |
| Max Span | 81.0 ft (24.7 m) |
| Deck Width | 34.8 ft (10.6 m) |
| Deck Area | 270.3 sq m |
| Main Spans | 1 |
| Year Built | 2002 |
Traffic
| Avg Daily Traffic | 1,000 (2023) |
| Truck Traffic | 7% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 059050100000000 |