Csah 4 over Rock River Overflow
GoodRock County, Minnesota · 0.6 MI E of JCT Csah 18 · Structure no. 67544
- Built
- 2002
- 23 years old
- Condition
- Good
- inspected October 2024
- Type
- Slab
- Concrete Continuous
- Length
- 113 ft
- 3 main spans
- Daily traffic
- 2,750
- 2018 count
- Owner
- County
- County Highway Agency
About this bridge
Csah 4 over Rock River Overflow is a concrete continuous slab carrying Csah 4 over Rock River Overflow in Rock County, Minnesota. It was built in 2002, so it is 23 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 2,750 vehicles a day, projected to reach 2,900 by 2038. The structure is 113 ft (34.3 m) long and 47 ft wide. If it were closed, the detour would be 14.3 mi (23 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 | 8 Very Good | 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 4 over Rock River Overflow built?
It was built in 2002, making it 23 years old in 2025.
What condition is Csah 4 over Rock River Overflow 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 October 2024.
How much traffic does Csah 4 over Rock River Overflow carry?
About 2,750 vehicles per day (2018 count).
How long is Csah 4 over Rock River Overflow?
The structure is 113 ft (34.3 m) long with a longest span of 42 ft (12.8 m) and a deck 47 ft wide.
Who owns Csah 4 over Rock River Overflow?
It is owned by the County Highway Agency.