US 51 (fap 322) over Flat Creek
Good Condition66 years old2,650 vehicles/day
Location
| State | Illinois |
| County | Marion |
| Location | .4 Mi S Fayette C L |
| Carries | US 51 (fap 322) |
| Crosses | Flat Creek |
| Coordinates | 38.81857, -89.08743 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 142.1 ft (43.3 m) |
| Max Span | 50.9 ft (15.5 m) |
| Deck Width | 43.3 ft (13.2 m) |
| Deck Area | 571.6 sq m |
| Main Spans | 3 |
| Year Built | 1960 (reconstructed 1996) |
Traffic
| Avg Daily Traffic | 2,650 (2023) |
| Truck Traffic | 22% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 125 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 061000100000000 |