Duffy Road over Little Rock Creek
Good Condition42 years old225 vehicles/day
Location
| State | Illinois |
| County | DeKalb |
| Location | 1000n 1440e |
| Carries | Duffy Road |
| Crosses | Little Rock Creek |
| Coordinates | 41.77679, -88.67178 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 64.0 ft (19.5 m) |
| Max Span | 59.1 ft (18 m) |
| Deck Width | 27.9 ft (8.5 m) |
| Deck Area | 165.8 sq m |
| Main Spans | 1 |
| Year Built | 1984 |
Traffic
| Avg Daily Traffic | 225 (2021) |
| Truck Traffic | 12% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 423 |
| Inspection Frequency | Every 48 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 019542700000000 |