Ill 178 over Vermilion River
Fair Condition92 years old1,650 vehicles/day
Location
| State | Illinois |
| County | LaSalle |
| Location | 3.7 Mi S Of Ill 71 |
| Carries | Ill 178 |
| Crosses | Vermilion River |
| Coordinates | 41.25607, -89.01211 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Other |
| Total Length | 392.1 ft (119.5 m) |
| Max Span | 86.0 ft (26.2 m) |
| Deck Width | 34.8 ft (10.6 m) |
| Deck Area | 1266.7 sq m |
| Main Spans | 3 |
| Year Built | 1934 (reconstructed 1989) |
Traffic
| Avg Daily Traffic | 1,650 (2023) |
| Truck Traffic | 18% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 324 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is possibly eligible (requires evaluation) |
| Structure Number | 050009600000000 |