Old Ill 121 over Mackinaw River
Poor Condition94 years old75 vehicles/day
Location
| State | Illinois |
| County | Tazewell |
| Location | 1mi N Hopedale Jct |
| Carries | Old Ill 121 |
| Crosses | Mackinaw River |
| Coordinates | 40.44038, -89.46846 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 3 (Serious) |
| Superstructure | 3 (Serious) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Truss - Thru |
| Total Length | 670.9 ft (204.5 m) |
| Max Span | 174.9 ft (53.3 m) |
| Deck Width | 24.0 ft (7.3 m) |
| Deck Area | 1492.8 sq m |
| Main Spans | 1 |
| Year Built | 1932 (reconstructed 1971) |
Traffic
| Avg Daily Traffic | 75 (2023) |
| Truck Traffic | 21% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 12 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Structure Number | 090008700000000 |