Mn 11 over Big Fork River
FairKoochiching County, Minnesota · 7.1 MI W of JCT TH 71 · Structure no. 36021
- Built
- 1992
- 33 years old
- Condition
- Fair
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 613 ft
- 5 main spans
- Daily traffic
- 731
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Mn 11 over Big Fork River is a prestressed concrete stringer/multi-beam or girder carrying Mn 11 over Big Fork River in Koochiching County, Minnesota. It was built in 1992, so it is 33 years old, younger 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 731 vehicles a day, roughly 20% of them trucks, projected to reach 690 by 2042. The structure is 613 ft (186.8 m) long and 42 ft wide. If it were closed, the detour would be 24.2 mi (39 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| 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 Mn 11 over Big Fork River built?
It was built in 1992, making it 33 years old in 2025.
What condition is Mn 11 over Big Fork River 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 April 2024.
How much traffic does Mn 11 over Big Fork River carry?
About 731 vehicles per day (2022 count), of which roughly 20% are trucks.
How long is Mn 11 over Big Fork River?
The structure is 613 ft (186.8 m) long with a longest span of 122 ft (37.2 m) and a deck 42 ft wide.
Who owns Mn 11 over Big Fork River?
It is owned by the State Highway Agency.