Il 78 over Coon Creek
Fair Condition30 years old1,050 vehicles/day
Location
| State | Illinois |
| County | Whiteside |
| Location | 2 Mi S Prophetstown |
| Carries | Il 78 |
| Crosses | Coon Creek |
| Coordinates | 41.63672, -89.93994 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 9 (Excellent) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 55.4 ft (16.9 m) |
| Max Span | 53.1 ft (16.2 m) |
| Deck Width | 35.1 ft (10.7 m) |
| Deck Area | 180.8 sq m |
| Main Spans | 1 |
| Year Built | 1996 |
Traffic
| Avg Daily Traffic | 1,050 (2023) |
| Truck Traffic | 15% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 922 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 098010300000000 |