Mn 15 over Cottonwood River
FairBrown County, Minnesota · 3.1 MI S of W JCT TH 14 · Structure no. 08010
- Built
- 1983
- 42 years old
- Condition
- Fair
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 509 ft
- 4 main spans
- Daily traffic
- 6,200
- 2016 count
- Owner
- State
- State Highway Agency
About this bridge
Mn 15 over Cottonwood River is a prestressed concrete stringer/multi-beam or girder carrying Mn 15 over Cottonwood River in Brown County, Minnesota. It was built in 1983, so it is 42 years old, older 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 5 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 6,200 vehicles a day, roughly 11% of them trucks, projected to reach 6,200 by 2036. The structure is 509 ft (155.1 m) long and 65 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 15 over Cottonwood River built?
It was built in 1983, making it 42 years old in 2025.
What condition is Mn 15 over Cottonwood 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 June 2023.
How much traffic does Mn 15 over Cottonwood River carry?
About 6,200 vehicles per day (2016 count), of which roughly 11% are trucks.
How long is Mn 15 over Cottonwood River?
The structure is 509 ft (155.1 m) long with a longest span of 127 ft (38.6 m) and a deck 65 ft wide.
Who owns Mn 15 over Cottonwood River?
It is owned by the State Highway Agency.