I-39 & US 51 SB over Blackhawk RD
Fair Condition45 years old14,500 vehicles/day
Location
| State | Illinois |
| County | Winnebago |
| Location | 1.75 Mi S Of US 20 |
| Carries | I-39 & US 51 SB |
| Crosses | Blackhawk RD |
| Coordinates | 42.19479, -89.02373 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 146.0 ft (44.5 m) |
| Max Span | 86.9 ft (26.5 m) |
| Deck Width | 42.0 ft (12.8 m) |
| Deck Area | 569.6 sq m |
| Main Spans | 1 |
| Year Built | 1981 |
Traffic
| Avg Daily Traffic | 14,500 (2023) |
| Truck Traffic | 37% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | December 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 101014200000000 |