Csah 31 over Big Fork River
GoodItasca County, Minnesota · 0.1 MI N of JCT Csah 29 · Structure no. 31558
- Built
- 2012
- 13 years old
- Condition
- Good
- inspected November 2023
- Type
- Slab
- Concrete Continuous
- Length
- 232 ft
- 5 main spans
- Daily traffic
- 92
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Csah 31 over Big Fork River is a concrete continuous slab carrying Csah 31 over Big Fork River in Itasca County, Minnesota. It was built in 2012, so it is 13 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 92 vehicles a day, projected to reach 110 by 2042. The structure is 232 ft (70.6 m) long and 35 ft wide. If it were closed, the detour would be 19.9 mi (32 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 9 Excellent | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Csah 31 over Big Fork River built?
It was built in 2012, making it 13 years old in 2025.
What condition is Csah 31 over Big Fork 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 31 over Big Fork River carry?
About 92 vehicles per day (2022 count).
How long is Csah 31 over Big Fork River?
The structure is 232 ft (70.6 m) long with a longest span of 50 ft (15.2 m) and a deck 35 ft wide.
Who owns Csah 31 over Big Fork River?
It is owned by the County Highway Agency.