Niggli Rd/ Tr 179 over E. Fork Silver Ck
Good Condition35 years old100 vehicles/day
Location
| State | Illinois |
| County | Madison |
| Location | 2.5 Mi N Grantfork |
| Carries | Niggli Rd/ Tr 179 |
| Crosses | E. Fork Silver Ck |
| Coordinates | 38.85959, -89.63471 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 61.4 ft (18.7 m) |
| Max Span | 59.1 ft (18 m) |
| Deck Width | 28.2 ft (8.6 m) |
| Deck Area | 160.8 sq m |
| Main Spans | 1 |
| Year Built | 1991 |
Traffic
| Avg Daily Traffic | 100 (2021) |
| Truck Traffic | 21% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | December 2023 |
| Inspection Frequency | Every 24 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 060330500000000 |