Tr 171 over Br Mackinaw River
Fair Condition55 years old50 vehicles/day
Location
| State | Illinois |
| County | McLean |
| Location | 1.5 Mi W Colfax |
| Carries | Tr 171 |
| Crosses | Br Mackinaw River |
| Coordinates | 40.56640, -88.64499 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 57.1 ft (17.4 m) |
| Max Span | 21.0 ft (6.4 m) |
| Deck Width | 25.9 ft (7.9 m) |
| Deck Area | 137.5 sq m |
| Main Spans | 3 |
| Year Built | 1971 |
Traffic
| Avg Daily Traffic | 50 (2024) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 057500100000000 |