Mn 9 over Sand Hill River
FairPolk County, Minnesota · 0.5 MI S of JCT Csah 1 · Structure no. 60008
- Built
- 1980
- 45 years old
- Condition
- Fair
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 100 ft
- 1 main span
- Daily traffic
- 483
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Mn 9 over Sand Hill River is a prestressed concrete stringer/multi-beam or girder carrying Mn 9 over Sand Hill River in Polk County, Minnesota. It was built in 1980, so it is 45 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 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 483 vehicles a day, roughly 28% of them trucks, projected to reach 610 by 2042. The structure is 100 ft (30.5 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 8 Very Good | No problems noted. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 9 over Sand Hill River built?
It was built in 1980, making it 45 years old in 2025.
What condition is Mn 9 over Sand Hill 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 2023.
How much traffic does Mn 9 over Sand Hill River carry?
About 483 vehicles per day (2022 count), of which roughly 28% are trucks.
How long is Mn 9 over Sand Hill River?
The structure is 100 ft (30.5 m) long with a longest span of 97 ft (29.6 m) and a deck 50 ft wide.
Who owns Mn 9 over Sand Hill River?
It is owned by the State Highway Agency.