Petersburg RD over Swamp Raisin Drain
Fair Condition70 years old500 vehicles/day
Location
| State | Michigan |
| County | Monroe |
| Location | 1.25 Mi S Of M-50 |
| Carries | Petersburg RD |
| Crosses | Swamp Raisin Drain |
| Coordinates | 41.94717, -83.71155 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 8 (Very Good) |
| Superstructure | 9 (Excellent) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Box Beam - Single/Spread |
| Total Length | 40.0 ft (12.2 m) |
| Max Span | 34.8 ft (10.6 m) |
| Deck Width | 31.2 ft (9.5 m) |
| Deck Area | 115.9 sq m |
| Main Spans | 1 |
| Year Built | 1956 (reconstructed 2019) |
Traffic
| Avg Daily Traffic | 500 (2016) |
| Truck Traffic | 17% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 523 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000007233 |