Mn 6 over Big Fork River
PoorItasca County, Minnesota · 32.8 MI N of Deer River · Structure no. 31001
- Built
- 1965
- 60 years old
- Condition
- Poor
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 193 ft
- 3 main spans
- Daily traffic
- 520
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Mn 6 over Big Fork River is a prestressed concrete stringer/multi-beam or girder carrying Mn 6 over Big Fork River in Itasca County, Minnesota. It was built in 1965, so it is 60 years old, older than the Minnesota average of 38.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 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.
It carries about 520 vehicles a day, roughly 19% of them trucks, projected to reach 580 by 2039. The structure is 193 ft (58.8 m) long and 35 ft wide. If it were closed, the detour would be 23 mi (37 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 6 over Big Fork River built?
It was built in 1965, making it 60 years old in 2025.
What condition is Mn 6 over Big Fork 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 May 2024.
How much traffic does Mn 6 over Big Fork River carry?
About 520 vehicles per day (2019 count), of which roughly 19% are trucks.
How long is Mn 6 over Big Fork River?
The structure is 193 ft (58.8 m) long with a longest span of 64 ft (19.6 m) and a deck 35 ft wide.
Who owns Mn 6 over Big Fork River?
It is owned by the State Highway Agency.