Jackson County Bridge Report Card

Jackson County scores 60 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

D60 / 100

Local infrastructure snapshot

Jackson County, South Dakota

Jackson County has 89 bridges in the National Bridge Inventory, with 13 rated poor and 3 rated scour-critical. Its poor-condition share of 14.6% is at or below the 16.1% statewide average. Poor-condition bridges carry about 1,553 daily vehicle crossings.

89Total Bridges

13Poor (14.6%)

50Fair (56.2%)

3Scour-Critical

Quote-Ready Local Facts

14.6%of county bridges are in poor condition, compared with 16.1% statewide and 6.7% nationally.

1,553daily vehicle crossings are on poor-condition bridges in the county.

3bridges are rated scour-critical, or 3.4% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Jackson County a Bridge Condition Exposure Score of 60/100 (D). The county has 89 bridges in the National Bridge Inventory, including 13 in poor condition and 3 rated scour-critical. Poor-condition bridges carry about 1,553 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	14.6%	29.2
Poor-condition traffic exposure	25	1.1% of measured traffic	0.9
Scour-critical bridge share	20	3.4%	6.7
Average age vs national baseline	10	56 years vs 48 nationally	3.3
Traffic-data completeness	5	135,297 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	14.6%
State Poor-Condition Share	16.1%
National Poor-Condition Share	6.7%
County Scour-Critical Share	3.4%
Average Bridge Age	56 years
Poor-Condition Traffic Exposure	1,553 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeIRR BIA RTE 2 over Potato Creek — 1,314 vehicles/day Oldest Listed BridgeHorseshoe Butte RD over Black Pipe Ck — built in 1930 All County BridgesBrowse every bridge record in Jackson County.

Top Bridges to Watch in Jackson County

Bridge	Reason	Condition	Daily Traffic	Year Built
Old NE Road over Big Buffalo Ck	Poor condition + traffic exposure	Poor	27	1940
IRR BIA RTE 2 over Potato Creek	Poor condition + traffic exposure	Poor	1,314	1942
242 Street over Outlet For Lake Spillway	Poor condition + traffic exposure	Poor	35	1935
Cottonwood Road over Cottonwood Ck	Poor condition + traffic exposure	Poor	35	1936
227 Avenue over Franklin Ck	Poor condition + traffic exposure	Poor	30	1940
Horseshoe Butte RD over Black Pipe Ck	Poor condition + traffic exposure	Poor	27	1930
269 Street over Eagle Nest Ck	Poor condition + traffic exposure	Poor	15	1945
254 Street over Cottonwood Ck	Poor condition + traffic exposure	Poor	15	1950
211 Avenue over Whitewater Ck	Poor condition + traffic exposure	Poor	14	1940
237 Street over South Fork Bad River	Poor condition + traffic exposure	Poor	11	1935

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.