Ill 4 over W Trib To Silver Crk
Fair Condition90 years old3,800 vehicles/day
Location
| State | Illinois |
| County | Madison |
| Location | 500 N Of Il 140 |
| Carries | Ill 4 |
| Crosses | W Trib To Silver Crk |
| Coordinates | 38.88972, -89.80073 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 100.4 ft (30.6 m) |
| Max Span | 33.8 ft (10.3 m) |
| Deck Width | 35.1 ft (10.7 m) |
| Deck Area | 327.4 sq m |
| Main Spans | 3 |
| Year Built | 1936 (reconstructed 1985) |
Traffic
| Avg Daily Traffic | 3,800 (2023) |
| Truck Traffic | 14% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 060010500000000 |