M 42 over US 12
FairHennepin County, Minnesota · 2.4 MI W of JCT TH 494 · Structure no. 27132
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 248 ft
- 3 main spans
- Daily traffic
- 8,000
- 1974 count
- Owner
- State
- State Highway Agency
About this bridge
M 42 over US 12 is a steel continuous stringer/multi-beam or girder carrying M 42 over US 12 in Hennepin 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 5 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 8,000 vehicles a day, projected to reach 8,000 by 2029. The structure is 248 ft (75.7 m) long and 58 ft wide.
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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was M 42 over US 12 built?
It was built in 1970, making it 55 years old in 2025.
What condition is M 42 over US 12 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 September 2024.
How much traffic does M 42 over US 12 carry?
About 8,000 vehicles per day (1974 count).
How long is M 42 over US 12?
The structure is 248 ft (75.7 m) long with a longest span of 131 ft (39.9 m) and a deck 58 ft wide.
Who owns M 42 over US 12?
It is owned by the State Highway Agency.