Ch-21 over Snow Creek
Fair Condition45 years old850 vehicles/day
Location
| State | Illinois |
| County | Jefferson |
| Location | 1.5 Mi S Boyd |
| Carries | Ch-21 |
| Crosses | Snow Creek |
| Coordinates | 38.39304, -89.01379 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 121.1 ft (36.9 m) |
| Max Span | 39.0 ft (11.9 m) |
| Deck Width | 28.2 ft (8.6 m) |
| Deck Area | 317.3 sq m |
| Main Spans | 3 |
| Year Built | 1981 |
Traffic
| Avg Daily Traffic | 850 (2021) |
| Truck Traffic | 19% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 041361800000000 |