Csah 61 over Grindstone River
GoodPine County, Minnesota · 0.2 MI N of JCT Csah 18 · Structure no. 58515
- Built
- 1979
- 46 years old
- Condition
- Good
- inspected November 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 97 ft
- 1 main span
- Daily traffic
- 2,229
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Csah 61 over Grindstone River is a prestressed concrete tee beam carrying Csah 61 over Grindstone River in Pine County, Minnesota. It was built in 1979, so it is 46 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 2,229 vehicles a day, projected to reach 2,850 by 2042. The structure is 97 ft (29.7 m) long and 52 ft wide. If it were closed, the detour would be 8.1 mi (13 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Csah 61 over Grindstone River built?
It was built in 1979, making it 46 years old in 2025.
What condition is Csah 61 over Grindstone 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 November 2023.
How much traffic does Csah 61 over Grindstone River carry?
About 2,229 vehicles per day (2022 count).
How long is Csah 61 over Grindstone River?
The structure is 97 ft (29.7 m) long with a longest span of 96 ft (29.3 m) and a deck 52 ft wide.
Who owns Csah 61 over Grindstone River?
It is owned by the County Highway Agency.