Mn 23 over I 90
FairRock County, Minnesota · At JCT TH 23 · Structure no. 9687
- Built
- 1960
- 65 years old, rebuilt 1991
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 204 ft
- 4 main spans
- Daily traffic
- 2,000
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
Mn 23 over I 90 is a steel continuous stringer/multi-beam or girder carrying Mn 23 over I 90 in Rock County, Minnesota. It was built in 1960 and reconstructed in 1991, so it is 65 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 2,000 vehicles a day, roughly 12% of them trucks, projected to reach 2,000 by 2034. The structure is 204 ft (62.1 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mn 23 over I 90 built?
It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1991.
What condition is Mn 23 over I 90 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 July 2023.
How much traffic does Mn 23 over I 90 carry?
About 2,000 vehicles per day (2014 count), of which roughly 12% are trucks.
How long is Mn 23 over I 90?
The structure is 204 ft (62.1 m) long with a longest span of 66 ft (20 m) and a deck 50 ft wide.
Who owns Mn 23 over I 90?
It is owned by the State Highway Agency.