Thumb Lake Road over N Br Boyne River
Good Condition23 years old2,545 vehicles/day
Location
| State | Michigan |
| County | Charlevoix |
| Location | 0.7 Mi E Of Boyne Falls |
| Carries | Thumb Lake Road |
| Crosses | N Br Boyne River |
| Coordinates | 45.17516, -84.89850 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 5 (Fair) |
| Culvert | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Culvert |
| Total Length | 23.3 ft (7.1 m) |
| Max Span | 22.6 ft (6.9 m) |
| Deck Area | 78.1 sq m |
| Main Spans | 1 |
| Year Built | 2003 |
Traffic
| Avg Daily Traffic | 2,545 (2003) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000013739 |