Mn 48 over ST Croix River
FairPine County, Minnesota · 23.6 MI E of JCT TH 35 · Structure no. 58001
- Built
- 1984
- 41 years old
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 222 ft
- 3 main spans
- Daily traffic
- 1,839
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Mn 48 over ST Croix River is a prestressed concrete stringer/multi-beam or girder carrying Mn 48 over ST Croix River in Pine County, Minnesota. It was built in 1984, so it is 41 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 1,839 vehicles a day, roughly 11% of them trucks, projected to reach 1,700 by 2042. The structure is 222 ft (67.6 m) long and 37 ft wide. If it were closed, the detour would be 49.7 mi (80 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mn 48 over ST Croix River built?
It was built in 1984, making it 41 years old in 2025.
What condition is Mn 48 over ST Croix 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 September 2024.
How much traffic does Mn 48 over ST Croix River carry?
About 1,839 vehicles per day (2022 count), of which roughly 11% are trucks.
How long is Mn 48 over ST Croix River?
The structure is 222 ft (67.6 m) long with a longest span of 73 ft (22.4 m) and a deck 37 ft wide.
Who owns Mn 48 over ST Croix River?
It is owned by the State Highway Agency.