Csah 61 over Knife River
Lake County, Minnesota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Csah 61 over Knife River in Lake County, Minnesota, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 2000, making it 25 years old at the 2025 inventory.
- It carries about 1,317 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 46 of the 90 inventoried bridges in Lake County rated good (51.1%); 11 (12.2%) 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 September 2023, on a 24-month routine inspection cycle.
- 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 → (46.94873, -91.78303)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 129 ft |
| Location | at Knife River Townsite |
| NBI structure number | 38519 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2023 |
| Inspection interval (item 91) | 24 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 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.