Mn 61 over Manitou River
Lake County, Minnesota · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mn 61 over Manitou River in Lake County, Minnesota, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1956, making it 69 years old at the 2025 inventory.
- It carries about 3,000 vehicles a day (traffic count year 2018).
- Its listed owner is the state highway agency.
- It is one of 11 of the 90 inventoried bridges in Lake County rated poor (12.2%); 11 (12.2%) are rated poor.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (47.44435, -91.06866)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 4 | Poor condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 33 ft |
| Location | 8.8 Mi N of Jct Th 1 |
| NBI structure number | 9002 |
| Condition class | Poor |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Minnesota department of transportation.
Busiest bridges in Lake County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Mn 61 over Stewart River | 1922 | 6,474 | Good |
| Mn 61 over Silver Creek; Pedestrian | 2022 | 6,474 | Good |
| Mn 61 over Crow Creek | 1968 | 4,763 | Fair |
| Mn 61 over Encampment River | 1941 | 4,763 | Good |
| Mn 61 over Conveyer | 1952 | 4,217 | Fair |
| Mn 61 over Conveyor Tunnel | 1978 | 4,217 | Fair |
All bridges nearby: Lake County, MN bridge conditions · every bridge in Lake County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.