Castor Road over Big Salt River
Fair Condition46 years old314 vehicles/day
Location
| State | Michigan |
| County | Midland |
| Location | 0.5 Mi N Of Walter RD |
| Carries | Castor Road |
| Crosses | Big Salt River |
| Coordinates | 43.70506, -84.48748 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 4 — Foundations need monitoring |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Single/Spread |
| Total Length | 159.1 ft (48.5 m) |
| Max Span | 53.1 ft (16.2 m) |
| Deck Width | 30.8 ft (9.4 m) |
| Deck Area | 455.9 sq m |
| Main Spans | 3 |
| Year Built | 1980 (reconstructed 2019) |
Traffic
| Avg Daily Traffic | 314 (2016) |
| Truck Traffic | 40% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000006995 |