Bennett County Bridge Report Card
Bennett County scores 51 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Bennett County, South Dakota
Bennett County has 15 bridges in the National Bridge Inventory, with 3 rated poor and 0 rated scour-critical. Its poor-condition share of 20.0% is above the 16.1% statewide average. Poor-condition bridges carry about 104 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Bennett County a Bridge Condition Exposure Score of 51/100 (F). The county has 15 bridges in the National Bridge Inventory, including 3 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 104 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.
How the Score Breaks Down
| Factor | Weight | County Value | Penalty |
|---|---|---|---|
| Poor-condition bridge share | 40 | 20.0% | 40.0 |
| Poor-condition traffic exposure | 25 | 3.0% of measured traffic | 2.2 |
| Scour-critical bridge share | 20 | 0.0% | 0.0 |
| Average age vs national baseline | 10 | 64 years vs 48 nationally | 6.4 |
| Traffic-data completeness | 5 | 3,507 measured daily crossings | 0.0 |
Score = 100 minus weighted penalties. The score is a comparative research signal, not an official safety rating. Read the full methodology.
County Comparisons
| County Poor-Condition Share | 20.0% |
| State Poor-Condition Share | 16.1% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.0% |
| Average Bridge Age | 64 years |
| Poor-Condition Traffic Exposure | 104 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Bennett County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| 220 Avenue over Lake Ck | Poor condition + traffic exposure | Poor | 40 | 1950 |
| 205 Avenue over Ck | Poor condition + traffic exposure | Poor | 37 | 1932 |
| 295 Street over Ck | Poor condition + traffic exposure | Poor | 27 | 1932 |
| Us018 over Ck | High traffic | Fair | 906 | 1951 |
| Us018 over Trib Little White Rv | High traffic | Good | 573 | 2020 |
| Sd073 over Little White Rv | High traffic | Fair | 522 | 1964 |
| Sd073 over Lake Ck | High traffic | Fair | 522 | 1964 |
| IRR BIA RTE Allen over Trib Of White River | High traffic | Good | 300 | 2017 |
| 290 Street over Ck | High traffic | Fair | 123 | 1954 |
| 231 Avenue over Ck | High traffic | Fair | 123 | 1954 |
Important safety note
Poor condition does not mean a bridge is unsafe. It means at least one major component has significant deterioration and the bridge is a priority for maintenance, repair, or replacement. Bridges judged unsafe are closed or restricted by transportation agencies.