I-57 (nb) over Flat Branch
Fair Condition59 years old11,350 vehicles/day
Location
| State | Illinois |
| County | Coles |
| Location | .5 Mi N Humboldt RD |
| Carries | I-57 (nb) |
| Crosses | Flat Branch |
| Coordinates | 39.60315, -88.29960 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 114.5 ft (34.9 m) |
| Max Span | 41.3 ft (12.6 m) |
| Deck Width | 44.6 ft (13.6 m) |
| Deck Area | 474.6 sq m |
| Main Spans | 3 |
| Year Built | 1967 (reconstructed 2001) |
Traffic
| Avg Daily Traffic | 11,350 (2023) |
| Truck Traffic | 38% |
| Lanes On Bridge | 1 |
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 | 015001100000000 |