Mn 4 over Cottonwood River
GoodBrown County, Minnesota · 7.5 MI S of Sleepy Eye · Structure no. 8814
- Built
- 1952
- 73 years old
- Condition
- Good
- inspected June 2024
- Type
- Culvert
- Concrete
- Length
- 33 ft
- 3 main spans
- Daily traffic
- 1,057
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Mn 4 over Cottonwood River is a concrete culvert carrying Mn 4 over Cottonwood River in Brown County, Minnesota. It was built in 1952, so it is 73 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 1,057 vehicles a day, roughly 34% of them trucks, projected to reach 1,300 by 2042. The structure is 33 ft (10 m) long. If it were closed, the detour would be 13 mi (21 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mn 4 over Cottonwood River built?
It was built in 1952, making it 73 years old in 2025.
What condition is Mn 4 over Cottonwood 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 June 2024.
How much traffic does Mn 4 over Cottonwood River carry?
About 1,057 vehicles per day (2022 count), of which roughly 34% are trucks.
How long is Mn 4 over Cottonwood River?
The structure is 33 ft (10 m) long with a longest span of 10 ft (3 m).
Who owns Mn 4 over Cottonwood River?
It is owned by the State Highway Agency.