M-99 M-50 over Spring Brook
Fair Condition38 years old15,977 vehicles/day
Location
| State | Michigan |
| County | Eaton |
| Location | In Eaton Rapids |
| Carries | M-99 M-50 |
| Crosses | Spring Brook |
| Coordinates | 42.51390, -84.65574 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 42.0 ft (12.8 m) |
| Max Span | 40.7 ft (12.4 m) |
| Deck Width | 67.6 ft (20.6 m) |
| Deck Area | 263.7 sq m |
| Main Spans | 1 |
| Year Built | 1988 |
Traffic
| Avg Daily Traffic | 15,977 (2007) |
| Truck Traffic | 5% |
| Lanes On Bridge | 3 |
Inspection & Ownership
| Last Inspection | 523 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000002300 |