Mn 61 over Cascade River
Cook County, Minnesota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mn 61 over Cascade River in Cook County, Minnesota, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1932, making it 93 years old at the 2025 inventory.
- It carries about 3,650 vehicles a day (traffic count year 2016).
- Its listed owner is the state highway agency.
- It is one of 23 of the 59 inventoried bridges in Cook County rated fair (39.0%); 4 (6.8%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated August 2021, on a 48-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (47.70713, -90.52274)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 34 ft |
| Location | 9.9 Mi NE of Lutsen |
| NBI structure number | 5132 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2021 |
| Inspection interval (item 91) | 48 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Minnesota department of transportation.
Busiest bridges in Cook County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Mn 61 over Cutface Creek | 2015 | 3,650 | Fair |
| Mn 61 over Onion River | 2009 | 3,650 | Fair |
| Mn 61 over Poplar River | 1931 | 3,650 | Fair |
| Mn 61 over Cross River | 1999 | 3,000 | Good |
| Mn 61 over Temperance River | 1931 | 3,000 | Fair |
| Mn 61 over Devils Track River | 2016 | 2,850 | Fair |
All bridges nearby: Cook County, MN bridge conditions · every bridge in Cook County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.