Con 3971 over Fill
FairSt. Louis County, Minnesota · 3.5 MI SW of JCT TH 535 · Structure no. 69879B
- Built
- 1969
- 56 years old
- Condition
- Fair
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 143 ft
- 2 main spans
- Daily traffic
- 2,845
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
Con 3971 over Fill is a steel continuous stringer/multi-beam or girder carrying Con 3971 over Fill in St. Louis County, Minnesota. It was built in 1969, so it is 56 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 2,845 vehicles a day, projected to reach 3,000 by 2041. The structure is 143 ft (43.7 m) long and 29 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Con 3971 over Fill built?
It was built in 1969, making it 56 years old in 2025.
What condition is Con 3971 over Fill 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 June 2024.
How much traffic does Con 3971 over Fill carry?
About 2,845 vehicles per day (2021 count).
How long is Con 3971 over Fill?
The structure is 143 ft (43.7 m) long with a longest span of 88 ft (26.7 m) and a deck 29 ft wide.
Who owns Con 3971 over Fill?
It is owned by the State Highway Agency.