Csah 21 over Silver Creek
GoodHouston County, Minnesota · 1.4 MI E of JCT Csah 9 · Structure no. 28510
- Built
- 1982
- 43 years old
- Condition
- Good
- inspected October 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 81 ft
- 2 main spans
- Daily traffic
- 382
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Csah 21 over Silver Creek is a prestressed concrete tee beam carrying Csah 21 over Silver Creek in Houston County, Minnesota. It was built in 1982, so it is 43 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 382 vehicles a day, projected to reach 370 by 2041. The structure is 81 ft (24.6 m) long and 35 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Csah 21 over Silver Creek built?
It was built in 1982, making it 43 years old in 2025.
What condition is Csah 21 over Silver Creek 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 21 over Silver Creek carry?
About 382 vehicles per day (2021 count).
How long is Csah 21 over Silver Creek?
The structure is 81 ft (24.6 m) long with a longest span of 40 ft (12.1 m) and a deck 35 ft wide.
Who owns Csah 21 over Silver Creek?
It is owned by the County Highway Agency.