Twombly RD over I-39 & US 51
Fair Condition46 years old600 vehicles/day
Location
| State | Illinois |
| County | Ogle |
| Location | 1 Mi N Of Il 38 |
| Carries | Twombly RD |
| Crosses | I-39 & US 51 |
| Coordinates | 41.94901, -89.02409 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 258.9 ft (78.9 m) |
| Max Span | 105.6 ft (32.2 m) |
| Deck Width | 29.9 ft (9.1 m) |
| Deck Area | 718.0 sq m |
| Main Spans | 2 |
| Year Built | 1980 |
Traffic
| Avg Daily Traffic | 600 (2022) |
| Truck Traffic | 16% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | November 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 071005700000000 |