Tr-105 (spring Rd) over Mazon River
Fair Condition116 years old75 vehicles/day
Location
| State | Illinois |
| County | Grundy |
| Location | .3 Mi E Campbell RD |
| Carries | Tr-105 (spring Rd) |
| Crosses | Mazon River |
| Coordinates | 41.27217, -88.36069 |
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 | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 161.7 ft (49.3 m) |
| Max Span | 52.5 ft (16 m) |
| Deck Width | 25.9 ft (7.9 m) |
| Deck Area | 389.5 sq m |
| Main Spans | 3 |
| Year Built | 1910 (reconstructed 2015) |
Traffic
| Avg Daily Traffic | 75 (2024) |
| Truck Traffic | 32% |
| 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 | 032510000000000 |