Csah 1 over Mississippi River
FairAitkin County, Minnesota · 0.5 MI N of JCT TH 210 · Structure no. 01506
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 364 ft
- 5 main spans
- Daily traffic
- 1,143
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Csah 1 over Mississippi River is a prestressed concrete stringer/multi-beam or girder carrying Csah 1 over Mississippi River in Aitkin County, Minnesota. It was built in 1970, so it is 55 years old, older than the Minnesota average of 38.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 1,143 vehicles a day, projected to reach 1,050 by 2042. The structure is 364 ft (111 m) long and 39 ft wide. If it were closed, the detour would be 23 mi (37 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Csah 1 over Mississippi River built?
It was built in 1970, making it 55 years old in 2025.
What condition is Csah 1 over Mississippi River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.
How much traffic does Csah 1 over Mississippi River carry?
About 1,143 vehicles per day (2022 count).
How long is Csah 1 over Mississippi River?
The structure is 364 ft (111 m) long with a longest span of 72 ft (22 m) and a deck 39 ft wide.
Who owns Csah 1 over Mississippi River?
It is owned by the County Highway Agency.