Mn 1 over Sturgeon River
FairSt. Louis County, Minnesota · 8.5 MI W of JCT TH 73 · Structure no. 69112
- Built
- 1992
- 33 years old
- Condition
- Fair
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 490 ft
- 6 main spans
- Daily traffic
- 130
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Mn 1 over Sturgeon River is a steel continuous stringer/multi-beam or girder carrying Mn 1 over Sturgeon River in St. Louis 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 130 vehicles a day, roughly 23% of them trucks, projected to reach 105 by 2039. The structure is 490 ft (149.4 m) long and 38 ft wide. If it were closed, the detour would be 8.7 mi (14 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mn 1 over Sturgeon River built?
It was built in 1992, making it 33 years old in 2025.
What condition is Mn 1 over Sturgeon 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 May 2024.
How much traffic does Mn 1 over Sturgeon River carry?
About 130 vehicles per day (2019 count), of which roughly 23% are trucks.
How long is Mn 1 over Sturgeon River?
The structure is 490 ft (149.4 m) long with a longest span of 86 ft (26.2 m) and a deck 38 ft wide.
Who owns Mn 1 over Sturgeon River?
It is owned by the State Highway Agency.