I 35 over Lake Marion
FairDakota County, Minnesota · 4.6 MI S of JCT TH 35 E · Structure no. 19847
- Built
- 1965
- 60 years old
- Condition
- Fair
- inspected April 2023
- Type
- Slab
- Concrete Continuous
- Length
- 75 ft
- 3 main spans
- Daily traffic
- 32,786
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
I 35 over Lake Marion is a concrete continuous slab carrying I 35 over Lake Marion in Dakota County, Minnesota. It was built in 1965, so it is 60 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 32,786 vehicles a day, roughly 13% of them trucks, projected to reach 35,000 by 2042. The structure is 75 ft (23 m) long and 41 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 | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 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 I 35 over Lake Marion built?
It was built in 1965, making it 60 years old in 2025.
What condition is I 35 over Lake Marion 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 April 2023.
How much traffic does I 35 over Lake Marion carry?
About 32,786 vehicles per day (2022 count), of which roughly 13% are trucks.
How long is I 35 over Lake Marion?
The structure is 75 ft (23 m) long with a longest span of 25 ft (7.7 m) and a deck 41 ft wide.
Who owns I 35 over Lake Marion?
It is owned by the State Highway Agency.