Old Us-31 over Csx Rr
Good Condition91 years old11,200 vehicles/day
Location
| State | Michigan |
| County | Mason |
| Location | 0.4 Mi S Of Us-10 |
| Carries | Old Us-31 |
| Crosses | Csx Rr |
| Coordinates | 43.95032, -86.41571 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 167.0 ft (50.9 m) |
| Max Span | 51.8 ft (15.8 m) |
| Deck Width | 48.6 ft (14.8 m) |
| Deck Area | 753.3 sq m |
| Main Spans | 4 |
| Year Built | 1935 (reconstructed 2021) |
Traffic
| Avg Daily Traffic | 11,200 (2021) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000006639 |