Mn 61 over Knife River
GoodSt. Louis County, Minnesota · At E CO Line · Structure no. 9341
- Built
- 1960
- 65 years old
- Condition
- Good
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 132 ft
- 3 main spans
- Daily traffic
- 4,547
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
Mn 61 over Knife River is a steel continuous stringer/multi-beam or girder carrying Mn 61 over Knife River in St. Louis County, Minnesota. It was built in 1960, so it is 65 years old, older than the Minnesota average of 38.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 4,547 vehicles a day, roughly 7% of them trucks, projected to reach 3,900 by 2041. The structure is 132 ft (40.1 m) long and 44 ft wide. If it were closed, the detour would be 5 mi (8 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mn 61 over Knife River built?
It was built in 1960, making it 65 years old in 2025.
What condition is Mn 61 over Knife 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 May 2023.
How much traffic does Mn 61 over Knife River carry?
About 4,547 vehicles per day (2021 count), of which roughly 7% are trucks.
How long is Mn 61 over Knife River?
The structure is 132 ft (40.1 m) long with a longest span of 50 ft (15.2 m) and a deck 44 ft wide.
Who owns Mn 61 over Knife River?
It is owned by the State Highway Agency.