Hyde County Bridge Report Card

Hyde County scores 39 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

F39 / 100

Local infrastructure snapshot

Hyde County, South Dakota

Hyde County has 23 bridges in the National Bridge Inventory, with 5 rated poor and 0 rated scour-critical. Its poor-condition share of 21.7% is above the 16.1% statewide average. Poor-condition bridges carry about 1,484 daily vehicle crossings.

23Total Bridges

5Poor (21.7%)

10Fair (43.5%)

0Scour-Critical

Quote-Ready Local Facts

21.7%of county bridges are in poor condition, compared with 16.1% statewide and 6.7% nationally.

1,484daily vehicle crossings are on poor-condition bridges in the county.

0bridges are rated scour-critical, or 0.0% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Hyde County a Bridge Condition Exposure Score of 39/100 (F). The county has 23 bridges in the National Bridge Inventory, including 5 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 1,484 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.

Download all county report-card scores as CSV.

How the Score Breaks Down

Factor	Weight	County Value	Penalty
Poor-condition bridge share	40	21.7%	40.0
Poor-condition traffic exposure	25	26.6% of measured traffic	19.9
Scour-critical bridge share	20	0.0%	0.0
Average age vs national baseline	10	51 years vs 48 nationally	1.3
Traffic-data completeness	5	5,580 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	21.7%
State Poor-Condition Share	16.1%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.0%
Average Bridge Age	51 years
Poor-Condition Traffic Exposure	1,484 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeIRR Sd034 over Campbell Ck — 918 vehicles/day Oldest Listed Bridge326 Avenue over South Chapelle Ck — built in 1920 All County BridgesBrowse every bridge record in Hyde County.

Top Bridges to Watch in Hyde County

Bridge	Reason	Condition	Daily Traffic	Year Built
IRR Sd034 over Campbell Ck	Poor condition + traffic exposure	Poor	918	1963
IRR Ar Sd047 over Br West Fork Elm Ck	Poor condition + traffic exposure	Poor	405	1959
326 Avenue over South Chapelle Ck	Poor condition + traffic exposure	Poor	65	1920
215 Street over West Fork Elm Ck	Poor condition + traffic exposure	Poor	65	1928
333rd Avenue over South Medicine Ck	Poor condition + traffic exposure	Poor	31	1934
IRR Sd034 over West Fork Elm Ck	High traffic	Fair	918	1955
IRR Sd034 over Draw	High traffic	Good	604	2001
IRR Sd034 over West Fork Elm Ck	High traffic	Good	604	2001
Sd047 over South Medicine Ck	High traffic	Fair	543	1959
IRR Ar Sd047 over Br West Fork Elm Ck	High traffic	Fair	405	1959

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.