Csah 91 over Mississippi River
FairItasca County, Minnesota · 2.0 MI E of JCT Csah 3 · Structure no. 31516
- Built
- 1978
- 47 years old
- Condition
- Fair
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 295 ft
- 4 main spans
- Daily traffic
- 45
- 2017 count
- Owner
- County
- County Highway Agency
About this bridge
Csah 91 over Mississippi River is a prestressed concrete stringer/multi-beam or girder carrying Csah 91 over Mississippi River in Itasca County, Minnesota. It was built in 1978, so it is 47 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 45 vehicles a day, projected to reach 45 by 2039. The structure is 295 ft (89.8 m) long and 40 ft wide. If it were closed, the detour would be 16.2 mi (26 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 | 7 Good | Some minor problems. |
| 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 91 over Mississippi River built?
It was built in 1978, making it 47 years old in 2025.
What condition is Csah 91 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 May 2024.
How much traffic does Csah 91 over Mississippi River carry?
About 45 vehicles per day (2017 count).
How long is Csah 91 over Mississippi River?
The structure is 295 ft (89.8 m) long with a longest span of 73 ft (22.1 m) and a deck 40 ft wide.
Who owns Csah 91 over Mississippi River?
It is owned by the County Highway Agency.