26950 414 Ave. over South Fork Twelve Mile C
Hutchinson County, South Dakota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 26950 414 Ave. over South Fork Twelve Mile C in Hutchinson County, South Dakota, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1989, making it 36 years old at the 2025 inventory.
- It carries about 69 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 86 of the 160 inventoried bridges in Hutchinson County rated fair (53.8%); 24 (15.0%) 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 → (43.47779, -97.91778)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 5 | Fair condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 106 ft |
| Location | 3 E Dimock S.d. |
| NBI structure number | 000000034100015 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the South Dakota department of transportation.
Busiest bridges in Hutchinson County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SD037 over Pony Ck | 1992 | 3,971 | Good |
| SD037 over Ck | 2000 | 3,375 | Good |
| SD037 over South Fork Twelve Mile C | 2000 | 3,234 | Good |
| US081 over Ck | 1994 | 2,385 | Good |
| SD037 over North Br Dry Ck | 2000 | 2,259 | Good |
| SD037 over Drainage Ditch | 2000 | 2,259 | Good |
All bridges nearby: Hutchinson County, SD bridge conditions · every bridge in Hutchinson County · South Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.