Csah 18 over Watonwan River
GoodWatonwan County, Minnesota · 0.9 MI N of JCT CR116 · Structure no. 90340
- Built
- 1920
- 105 years old
- Condition
- Good
- inspected September 2023
- Type
- Culvert
- Concrete
- Length
- 45 ft
- 4 main spans
- Daily traffic
- 85
- 2016 count
- Owner
- County
- County Highway Agency
About this bridge
Csah 18 over Watonwan River is a concrete culvert carrying Csah 18 over Watonwan River in Watonwan County, Minnesota. It was built in 1920, so it is 105 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 85 vehicles a day, projected to reach 85 by 2035. The structure is 45 ft (13.7 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Csah 18 over Watonwan River built?
It was built in 1920, making it 105 years old in 2025.
What condition is Csah 18 over Watonwan 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 September 2023.
How much traffic does Csah 18 over Watonwan River carry?
About 85 vehicles per day (2016 count).
How long is Csah 18 over Watonwan River?
The structure is 45 ft (13.7 m) long with a longest span of 10 ft (3 m) and a deck 26 ft wide.
Who owns Csah 18 over Watonwan River?
It is owned by the County Highway Agency.