US 51 over Ohio River
Fair Condition89 years old5,700 vehicles/day
Location
| State | Illinois |
| County | Alexander |
| Location | 1 Mi S Cairo |
| Carries | US 51 |
| Crosses | Ohio River |
| Coordinates | 36.98883, -89.15116 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel Continuous |
| Design | Truss - Thru |
| Total Length | 5865.2 ft (1787.7 m) |
| Max Span | 799.9 ft (243.8 m) |
| Deck Width | 25.9 ft (7.9 m) |
| Deck Area | 14122.8 sq m |
| Main Spans | 5 |
| Year Built | 1937 (reconstructed 1979) |
Traffic
| Avg Daily Traffic | 5,700 (2023) |
| Truck Traffic | 25% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 12 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 002000600000000 |