Bridge conditions in Hyde County, South Dakota
23 inventoried bridges · 5 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Of the 23 Hyde County bridges in the federal inventory, 5 carry a poor rating. That 21.7% share is roughly 3x the national average.
- 5 of the 23 bridges in Hyde County, South Dakota, are rated in poor condition (21.7%) in the 2025 National Bridge Inventory, as of .
- 8 bridges (34.8%) are rated good and 10 (43.5%) fair.
- The median Hyde County bridge was built in 1967.
- The busiest poor-rated bridge is Irr SD034 over Campbell Ck (built 1963), carrying about 918 vehicles a day.
Good 34.8% · Fair 43.5% · Poor 21.7% of 23 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Irr SD034 over Campbell Ck | 1963 | 918 | Poor |
| Irr Ar SD047 over Br West Fork Elm Ck | 1959 | 405 | Poor |
| 326 Avenue over South Chapelle Ck | 1920 | 65 | Poor |
| 215 Street over West Fork Elm Ck | 1928 | 65 | Poor |
| 333RD Avenue over South Medicine Ck | 1934 | 31 | Poor |
Busiest bridges in the 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 |
| Irr Ar SD047 over Br West Fork Elm Ck | 1959 | 405 | Poor |
| SD047 over Ck | 1964 | 282 | Fair |
| 216 Street over Br Elm Ck | 1957 | 98 | Fair |
| 216 Street over Ck | 2015 | 95 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of South Dakota: South Dakota bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.