340TH Avenue over Wolf Ck
Hyde County, South Dakota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 340TH Avenue over Wolf Ck in Hyde County, South Dakota, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2020, making it 5 years old at the 2025 inventory.
- It carries about 60 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 8 of the 23 inventoried bridges in Hyde County rated good (34.8%); 5 (21.7%) are rated poor.
- 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 → (44.64294, -99.37312)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 8 | Very good condition |
Bridge details
| Structure | Steel culvert |
| Length | about 30 ft |
| Location | 3E and 7.6N Highmore |
| NBI structure number | 000000035150174 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the South Dakota department of transportation.
Busiest bridges in Hyde County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Irr SD034 over West Fork Elm Ck | 1955 | 918 | Fair |
| Irr SD034 over Campbell Ck | 1963 | 918 | Poor |
| Irr SD034 over Draw | 2001 | 604 | Good |
| Irr SD034 over West Fork Elm Ck | 2001 | 604 | Good |
| SD047 over South Medicine Ck | 1959 | 543 | Fair |
| Irr Ar SD047 over Br West Fork Elm Ck | 1959 | 405 | Fair |
All bridges nearby: Hyde County, SD bridge conditions · every bridge in Hyde County · South Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.