Csah 30 over Watonwan River
GoodBlue Earth County, Minnesota · 0.2 MI E of JCT Csah 31 · Structure no. 7189
- Built
- 1957
- 68 years old
- Condition
- Good
- inspected October 2023
- Type
- Girder and Floorbeam System
- Concrete
- Length
- 135 ft
- 3 main spans
- Daily traffic
- 108
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Csah 30 over Watonwan River is a concrete girder and floorbeam system carrying Csah 30 over Watonwan River in Blue Earth County, Minnesota. It was built in 1957, so it is 68 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 108 vehicles a day, projected to reach 120 by 2041. The structure is 135 ft (41.1 m) long and 30 ft wide. If it were closed, the detour would be 6.8 mi (11 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Csah 30 over Watonwan River built?
It was built in 1957, making it 68 years old in 2025.
What condition is Csah 30 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 October 2023.
How much traffic does Csah 30 over Watonwan River carry?
About 108 vehicles per day (2021 count).
How long is Csah 30 over Watonwan River?
The structure is 135 ft (41.1 m) long with a longest span of 50 ft (15.3 m) and a deck 30 ft wide.
Who owns Csah 30 over Watonwan River?
It is owned by the County Highway Agency.