Tr99 over Somonauk Creek
Fair Condition31 years old75 vehicles/day
Location
| State | Illinois |
| County | LaSalle |
| Location | N4250th E2610 |
| Carries | Tr99 |
| Crosses | Somonauk Creek |
| Coordinates | 41.55231, -88.67491 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 131.6 ft (40.1 m) |
| Max Span | 49.9 ft (15.2 m) |
| Deck Width | 24.0 ft (7.3 m) |
| Deck Area | 292.7 sq m |
| Main Spans | 3 |
| Year Built | 1995 |
Traffic
| Avg Daily Traffic | 75 (2020) |
| Truck Traffic | 32% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 24 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 050354500000000 |