Chain Of Rocks Roa over Over Il 255 (fap310)
Fair Condition32 years old2,200 vehicles/day
Location
| State | Illinois |
| County | Madison |
| Location | 2 M West Of Il 157 |
| Carries | Chain Of Rocks Roa |
| Crosses | Over Il 255 (fap310) |
| Coordinates | 38.76200, -90.04376 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 478.7 ft (145.9 m) |
| Max Span | 148.0 ft (45.1 m) |
| Deck Width | 47.2 ft (14.4 m) |
| Deck Area | 2101.0 sq m |
| Main Spans | 4 |
| Year Built | 1994 |
Traffic
| Avg Daily Traffic | 2,200 (2021) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 9 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 060024500000000 |