French Line Road over Duff Drain
Fair Condition25 years old435 vehicles/day
Location
| State | Michigan |
| County | Sanilac |
| Location | Sec. 23-26 Marlette Twp. |
| Carries | French Line Road |
| Crosses | Duff Drain |
| Coordinates | 43.35847, -83.01116 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 5 (Fair) |
| Culvert | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Aluminum/Wrought Iron/Cast Iron |
| Design | Culvert |
| Total Length | 25.3 ft (7.7 m) |
| Max Span | 25.3 ft (7.7 m) |
| Deck Area | 80.1 sq m |
| Main Spans | 1 |
| Year Built | 2001 |
Traffic
| Avg Daily Traffic | 435 (2016) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000009560 |