Every bridge in Buffalo County, South Dakota
25 inventoried bridges, busiest first
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Buffalo County, South Dakota, has 25 bridges in the 2025 National Bridge Inventory: 8 rated good, 16 fair, and 1 poor (as of ).
- This index lists every one of them, busiest first; each links to its own condition record.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Bia Rte 4 over Campbell Creek | 2013 | 1,720 | Good |
| SD045 over Crow Ck | 1960 | 949 | Fair |
| Irr SD050 over Crow Ck | 1999 | 928 | Good |
| Irr SD050 over Wolf Ck | 1954 | 928 | Fair |
| Irr SD034 over East Fork Soldier Ck | 1962 | 918 | Fair |
| Irr SD047 over Soldier Ck | 1963 | 917 | Fair |
| SD045 over Ck | 1960 | 755 | Fair |
| SD045 over Crow Ck | 1958 | 755 | Fair |
| State Highway 47 over Big Bend Dam Spillway | 1963 | 676 | Fair |
| Irr SD034 over Campbell Ck | 2016 | 571 | Good |
| SD034 over Ck | 1952 | 514 | Good |
| SD045 over Br Crow Ck | 1958 | 492 | Fair |
| Irr SD034 over Ck | 1999 | 469 | Good |
| Irr SD034 over Elm Ck | 1990 | 469 | Good |
| SD034 over Crow Ck | 1987 | 469 | Good |
| Irr Bia Rte 2 over Crow Creek | 1973 | 178 | Fair |
| Irr Bia Rte 202 over Smith Creek | 1983 | 147 | Fair |
| 349TH Avenue over Elm Creek | 1975 | 55 | Fair |
| 355TH Avenue over Crow Creek | 1975 | 55 | Poor |
| Old Ft Thompson Rd over Soldier Creek | 1973 | 50 | Fair |
| 221ST Street over Elm Creek | 1975 | 41 | Fair |
| 225TH Street over Elm Creek | 1975 | 41 | Fair |
| 233RD Street over Crow Creek | 1999 | 41 | Good |
| 350TH Avenue over Crow Creek | 1975 | 41 | Fair |
| Yellow Dog Hill Rd over Crow Creek | 1963 | 40 | Fair |
Source: FHWA National Bridge Inventory, 2025.
Buffalo County bridge conditions · South Dakota bridges by county.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.