I 35 over Portage River
FairCarlton County, Minnesota · 1.1 MI N of JCT TH 73 · Structure no. 09810
- Built
- 1968
- 57 years old
- Condition
- Fair
- inspected May 2024
- Type
- Culvert
- Concrete
- Length
- 27 ft
- 2 main spans
- Daily traffic
- 16,400
- 2016 count
- Owner
- State
- State Highway Agency
About this bridge
I 35 over Portage River is a concrete culvert carrying I 35 over Portage River in Carlton County, Minnesota. It was built in 1968, so it is 57 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 16,400 vehicles a day, roughly 6% of them trucks, projected to reach 16,400 by 2036. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 5 mi (8 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 35 over Portage River built?
It was built in 1968, making it 57 years old in 2025.
What condition is I 35 over Portage 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 I 35 over Portage River carry?
About 16,400 vehicles per day (2016 count), of which roughly 6% are trucks.
How long is I 35 over Portage River?
The structure is 27 ft (8.2 m) long with a longest span of 12 ft (3.8 m).
Who owns I 35 over Portage River?
It is owned by the State Highway Agency.