Ill 9 over Mackinaw River
Fair Condition97 years old2,700 vehicles/day
Location
| State | Illinois |
| County | Tazewell |
| Location | 1.5 Mi W Of Mackinaw |
| Carries | Ill 9 |
| Crosses | Mackinaw River |
| Coordinates | 40.52201, -89.39562 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 3 (Serious) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 490.2 ft (149.4 m) |
| Max Span | 160.1 ft (48.8 m) |
| Deck Width | 35.1 ft (10.7 m) |
| Deck Area | 1598.6 sq m |
| Main Spans | 6 |
| Year Built | 1929 (reconstructed 1982) |
Traffic
| Avg Daily Traffic | 2,700 (2023) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 324 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 090006300000000 |