Thumb Lake Road over N Br Boyne River
GoodCharlevoix County, Michigan · 0.7 MI E of Boyne Falls · Structure no. 000000000013739
- Built
- 2003
- 22 years old
- Condition
- Good
- inspected October 2024
- Type
- Culvert
- Steel
- Length
- 23 ft
- 1 main span
- Daily traffic
- 2,545
- 2003 count
- Owner
- County
- County Highway Agency
About this bridge
Thumb Lake Road over N Br Boyne River is a steel culvert carrying Thumb Lake Road over N Br Boyne River in Charlevoix County, Michigan. It was built in 2003, so it is 22 years old, younger than the Michigan average of 48.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 2,545 vehicles a day, projected to reach 4,597 by 2023. The structure is 23 ft (7.1 m) long. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Thumb Lake Road over N Br Boyne River built?
It was built in 2003, making it 22 years old in 2025.
What condition is Thumb Lake Road over N Br Boyne River in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.
How much traffic does Thumb Lake Road over N Br Boyne River carry?
About 2,545 vehicles per day (2003 count).
How long is Thumb Lake Road over N Br Boyne River?
The structure is 23 ft (7.1 m) long with a longest span of 23 ft (6.9 m).
Who owns Thumb Lake Road over N Br Boyne River?
It is owned by the County Highway Agency.