M 712 over Amity Creek
FairSt. Louis County, Minnesota · 1.4 MI N of JCT CSAH12 · Structure no. L8505
- Built
- 1912
- 113 years old, rebuilt 2001
- Condition
- Fair
- inspected October 2023
- Type
- Arch - Deck
- Concrete
- Length
- 32 ft
- 1 main span
- Daily traffic
- 72
- 1985 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
M 712 over Amity Creek is a concrete arch - deck carrying M 712 over Amity Creek in St. Louis County, Minnesota. It was built in 1912 and reconstructed in 2001, so it is 113 years old, older than the Minnesota average of 38.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 72 vehicles a day, projected to reach 72 by 2029. The structure is 32 ft (9.8 m) long and 21 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 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was M 712 over Amity Creek built?
It was built in 1912, making it 113 years old in 2025. It was reconstructed in 2001.
What condition is M 712 over Amity Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.
How much traffic does M 712 over Amity Creek carry?
About 72 vehicles per day (1985 count).
How long is M 712 over Amity Creek?
The structure is 32 ft (9.8 m) long with a longest span of 28 ft (8.6 m) and a deck 21 ft wide.
Who owns M 712 over Amity Creek?
It is owned by the City or Municipal Highway Agency.