Rotunda Drive over M-39
Good Condition62 years old30,000 vehicles/day
Location
| State | Michigan |
| County | Wayne |
| Location | In Dearborn |
| Carries | Rotunda Drive |
| Crosses | M-39 |
| Coordinates | 42.29848, -83.20602 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Single/Spread |
| Total Length | 179.8 ft (54.8 m) |
| Max Span | 54.8 ft (16.7 m) |
| Deck Width | 140.1 ft (42.7 m) |
| Deck Area | 2340.0 sq m |
| Main Spans | 4 |
| Year Built | 1964 (reconstructed 2005) |
Traffic
| Avg Daily Traffic | 30,000 (2005) |
| Truck Traffic | 6% |
| Lanes On Bridge | 8 |
| Lanes Under Bridge | 6 |
Inspection & Ownership
| Last Inspection | 524 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000011683 |