Tr 171 over Prairie Ck
Fair Condition48 years old175 vehicles/day
Location
| State | Illinois |
| County | Mason |
| Location | 4.5 Mi Esemason Cty |
| Carries | Tr 171 |
| Crosses | Prairie Ck |
| Coordinates | 40.17924, -89.60742 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 128.9 ft (39.3 m) |
| Max Span | 42.0 ft (12.8 m) |
| Deck Width | 24.3 ft (7.4 m) |
| Deck Area | 290.8 sq m |
| Main Spans | 3 |
| Year Built | 1978 |
Traffic
| Avg Daily Traffic | 175 (2024) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 225 |
| Inspection Frequency | Every 24 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 063431300000000 |