Bridge conditions in Fall River County, South Dakota
80 inventoried bridges · 5 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Fall River County tracks close to typical: 5 of its 80 inventoried bridges (6.2%) are rated poor, against a national rate of about 7%.
- 5 of the 80 bridges in Fall River County, South Dakota, are rated in poor condition (6.2%) in the 2025 National Bridge Inventory, as of .
- 41 bridges (51.2%) are rated good and 34 (42.5%) fair.
- The median Fall River County bridge was built in 1982.
- The busiest poor-rated bridge is Minnekahta Avenue over Fall Rv (built 1934), carrying about 588 vehicles a day.
Good 51.2% · Fair 42.5% · Poor 6.2% of 80 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 |
|---|---|---|---|
| Minnekahta Avenue over Fall Rv | 1934 | 588 | Poor |
| County Rd over Fall Rv | 1932 | 41 | Poor |
| Scenic Road over Cheyenne Rv | 1930 | 41 | Poor |
| Igloo Rd over Coal Ck | 1940 | 20 | Poor |
| County Rd (sd 298) over Burlington Northern RR | 1945 | 20 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US018 over Fall Rv | 2010 | 5,064 | Fair |
| US018 over Fall Rv | 2010 | 5,064 | Fair |
| US018 over Ck | 1968 | 4,913 | Fair |
| US385 over Fall Rv | 1998 | 4,898 | Good |
| US018 over Fall Rv | 1968 | 4,687 | Fair |
| SD079 over Elm Ck | 2006 | 4,214 | Fair |
| US385 over Fall Rv | 1982 | 3,708 | Fair |
| US385 over Ck | 1982 | 3,708 | Good |
| US385 Nf over Garden St | 1982 | 2,758 | Fair |
| US385 Nf over Fall Rv | 1982 | 2,758 | 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.