Hill Island Road over Flower Bay Lake Huron
Good Condition8 years old606 vehicles/day
Location
| State | Michigan |
| County | Mackinac |
| Location | 0.25 Mi S Of M-134 |
| Carries | Hill Island Road |
| Crosses | Flower Bay Lake Huron |
| Coordinates | 45.99539, -84.33120 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 8 (Very Good) |
| Culvert | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 47.9 ft (14.6 m) |
| Max Span | 45.9 ft (14 m) |
| Deck Area | 169.4 sq m |
| Main Spans | 1 |
| Year Built | 2018 |
Traffic
| Avg Daily Traffic | 606 (2016) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000005979 |