M 340 over E Swan River
PoorPosted for loadSt. Louis County, Minnesota · 1.6 MI W of JCT Csah 5 · Structure no. 88774
- Built
- 1930
- 95 years old
- Condition
- Poor
- inspected August 2024
- Type
- Girder and Floorbeam System
- Concrete
- Length
- 39 ft
- 1 main span
- Daily traffic
- 20
- 1975 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
M 340 over E Swan River is a concrete girder and floorbeam system carrying M 340 over E Swan River in St. Louis County, Minnesota. It was built in 1930, so it is 95 years old, older than the Minnesota average of 38.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 20 vehicles a day, projected to reach 20 by 2029. The structure is 39 ft (11.9 m) long and 19 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was M 340 over E Swan River built?
It was built in 1930, making it 95 years old in 2025.
What condition is M 340 over E Swan River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.
How much traffic does M 340 over E Swan River carry?
About 20 vehicles per day (1975 count).
How long is M 340 over E Swan River?
The structure is 39 ft (11.9 m) long with a longest span of 35 ft (10.7 m) and a deck 19 ft wide.
Who owns M 340 over E Swan River?
It is owned by the City or Municipal Highway Agency.