366 Ave over Ck
Hand County, South Dakota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 366 Ave over Ck in Hand County, South Dakota, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1970, making it 55 years old at the 2025 inventory.
- It carries about 76 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 57 of the 126 inventoried bridges in Hand County rated fair (45.2%); 40 (31.7%) are rated poor.
- 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 → (44.8353, -98.86633)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete stringer or multi-beam girder |
| Length | about 36 ft |
| Location | 6 E & 20.9 N Miller |
| NBI structure number | 000000030220041 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the South Dakota department of transportation.
Busiest bridges in Hand County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US014 over Ree Ck | 1987 | 2,357 | Fair |
| US014 over Turtle Ck | 1996 | 2,073 | Fair |
| US014 over Ck | 1935 | 2,034 | Fair |
| US014 over Ck | 1935 | 2,034 | Fair |
| US014 over Ck | 1935 | 2,034 | Fair |
| US014 over Ck | 1935 | 2,034 | Good |
All bridges nearby: Hand County, SD bridge conditions · every bridge in Hand County · South Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.