Spink County Bridge Report Card

Spink County scores 42 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

F42 / 100

Local infrastructure snapshot

Spink County, South Dakota

Spink County has 176 bridges in the National Bridge Inventory, with 53 rated poor and 4 rated scour-critical. Its poor-condition share of 30.1% is above the 16.1% statewide average. Poor-condition bridges carry about 2,909 daily vehicle crossings.

176Total Bridges

53Poor (30.1%)

100Fair (56.8%)

4Scour-Critical

Quote-Ready Local Facts

30.1%of county bridges are in poor condition, compared with 16.1% statewide and 6.7% nationally.

2,909daily vehicle crossings are on poor-condition bridges in the county.

4bridges are rated scour-critical, or 2.3% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Spink County a Bridge Condition Exposure Score of 42/100 (F). The county has 176 bridges in the National Bridge Inventory, including 53 in poor condition and 4 rated scour-critical. Poor-condition bridges carry about 2,909 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	30.1%	40.0
Poor-condition traffic exposure	25	8.2% of measured traffic	6.1
Scour-critical bridge share	20	2.3%	4.5
Average age vs national baseline	10	65 years vs 48 nationally	7.0
Traffic-data completeness	5	35,670 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	30.1%
State Poor-Condition Share	16.1%
National Poor-Condition Share	6.7%
County Scour-Critical Share	2.3%
Average Bridge Age	65 years
Poor-Condition Traffic Exposure	2,909 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeSd037 over Ck — 462 vehicles/day Oldest Listed Bridge185th ST over Turtle Ck — built in 1903 All County BridgesBrowse every bridge record in Spink County.

Top Bridges to Watch in Spink County

Bridge	Reason	Condition	Daily Traffic	Year Built
Sd037 over Ck	Poor condition + traffic exposure	Poor	462	1958
165th Street over James River	Poor condition + traffic exposure	Poor	146	1955
164th Street over S Fork Snake Creek	Poor condition + traffic exposure	Poor	130	1964
175th Street over Turtle Creek	Poor condition + traffic exposure	Poor	126	1909
161st Street over Creek	Poor condition + traffic exposure	Poor	100	1930
161st Street over Creek	Poor condition + traffic exposure	Poor	91	1930
382nd Avenue over Creek	Poor condition + traffic exposure	Poor	85	1909
377th Avenue over Turtle Creek	Poor condition + traffic exposure	Poor	78	1965
377th Avenue over Creek	Poor condition + traffic exposure	Poor	76	1929
179th Street over Turtle Creek	Poor condition + traffic exposure	Poor	55	1908

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.