M 340 over Little Swan River
St. Louis County, Minnesota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- M 340 over Little Swan River in St. Louis County, Minnesota, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 9 (excellent condition) on the 0-9 scale.
- It was built in 2024, making it 1 years old at the 2025 inventory.
- It carries about 49 vehicles a day (traffic count year 2024).
- Its listed owner is a city or municipal highway agency.
- It is one of 344 of the 670 inventoried bridges in St. Louis County rated good (51.3%); 41 (6.1%) are rated poor.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (47.29709, -92.83122)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 9 | Excellent condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 32 ft |
| Location | 0.1 Mi W of Jct CR 444 |
| NBI structure number | 69L31 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Minnesota department of transportation.
Busiest bridges in St. Louis County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 35 over Miller & Coffee Creek | 2022 | 46,000 | Good |
| I 35 over Unstable Material | 1970 | 45,454 | Fair |
| I 35 over Recycle Way | 2011 | 38,802 | Good |
| I 35 over I 35 NB Off Ramp | 1965 | 35,500 | Fair |
| I 35 over Abandoned City St | 1969 | 35,500 | Fair |
| I 535 over SB Garfield; BNSF RR | 1969 | 28,098 | Fair |
All bridges nearby: St. Louis County, MN bridge conditions · every bridge in St. Louis County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.