Il 78 over East Johnson Creek
Fair Condition30 years old1,550 vehicles/day
Location
| State | Illinois |
| County | Carroll |
| Location | 4 Mi. S. Mt Carroll |
| Carries | Il 78 |
| Crosses | East Johnson Creek |
| Coordinates | 42.02054, -89.97814 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 77.4 ft (23.6 m) |
| Max Span | 75.1 ft (22.9 m) |
| Deck Width | 38.7 ft (11.8 m) |
| Deck Area | 278.5 sq m |
| Main Spans | 1 |
| Year Built | 1996 |
Traffic
| Avg Daily Traffic | 1,550 (2023) |
| Truck Traffic | 17% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2022 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 008004300000000 |