Il 23 over Somonauk Creek
Fair Condition51 years old3,150 vehicles/day
Location
| State | Illinois |
| County | DeKalb |
| Location | 1.4 Mi N Jct US 30 |
| Carries | Il 23 |
| Crosses | Somonauk Creek |
| Coordinates | 41.78807, -88.75419 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 5 (Fair) |
| Culvert | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 37.1 ft (11.3 m) |
| Max Span | 13.5 ft (4.1 m) |
| Deck Width | 46.6 ft (14.2 m) |
| Deck Area | 160.5 sq m |
| Main Spans | 3 |
| Year Built | 1975 |
Traffic
| Avg Daily Traffic | 3,150 (2023) |
| Truck Traffic | 9% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 223 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 019200800000000 |