Csah 6 over I 90
PoorRock County, Minnesota · 7.4 MI W of JCT TH 75 · Structure no. 9774
- Built
- 1964
- 61 years old
- Condition
- Poor
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 215 ft
- 4 main spans
- Daily traffic
- 1,006
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Csah 6 over I 90 is a prestressed concrete stringer/multi-beam or girder carrying Csah 6 over I 90 in Rock County, Minnesota. It was built in 1964, so it is 61 years old, older than the Minnesota average of 38.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 1,006 vehicles a day, projected to reach 1,150 by 2042. The structure is 215 ft (65.5 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Csah 6 over I 90 built?
It was built in 1964, making it 61 years old in 2025.
What condition is Csah 6 over I 90 in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.
How much traffic does Csah 6 over I 90 carry?
About 1,006 vehicles per day (2022 count).
How long is Csah 6 over I 90?
The structure is 215 ft (65.5 m) long with a longest span of 67 ft (20.4 m) and a deck 33 ft wide.
Who owns Csah 6 over I 90?
It is owned by the State Highway Agency.