12 Mile Road over Charlotte River
PoorPosted for loadChippewa County, Michigan · 12 MI SE of Sault Ste Mar · Structure no. 000000000001648
- Built
- 1907
- 118 years old, rebuilt 1986
- Condition
- Poor
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 58 ft
- 3 main spans
- Daily traffic
- 50
- 1986 count
- Owner
- County
- County Highway Agency
About this bridge
12 Mile Road over Charlotte River is a steel stringer/multi-beam or girder carrying 12 Mile Road over Charlotte River in Chippewa County, Michigan. It was built in 1907 and reconstructed in 1986, so it is 118 years old, older than the Michigan average of 48.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 50 vehicles a day, projected to reach 85 by 2019. The structure is 58 ft (17.6 m) long and 16 ft wide. If it were closed, the detour would be 6.8 mi (11 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 12 Mile Road over Charlotte River built?
It was built in 1907, making it 118 years old in 2025. It was reconstructed in 1986.
What condition is 12 Mile Road over Charlotte River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.
How much traffic does 12 Mile Road over Charlotte River carry?
About 50 vehicles per day (1986 count).
How long is 12 Mile Road over Charlotte River?
The structure is 58 ft (17.6 m) long with a longest span of 20 ft (6.1 m) and a deck 16 ft wide.
Who owns 12 Mile Road over Charlotte River?
It is owned by the County Highway Agency.