Ill 180 over Spoon River
Fair Condition36 years old625 vehicles/day
Location
| State | Illinois |
| County | Knox |
| Location | 1 Mi N Williamsfield |
| Carries | Ill 180 |
| Crosses | Spoon River |
| Coordinates | 40.94499, -90.01409 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 433.1 ft (132 m) |
| Max Span | 170.9 ft (52.1 m) |
| Deck Width | 33.1 ft (10.1 m) |
| Deck Area | 1333.2 sq m |
| Main Spans | 3 |
| Year Built | 1990 |
Traffic
| Avg Daily Traffic | 625 (2023) |
| Truck Traffic | 11% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 224 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 048008000000000 |