Davison County Bridge Report Card

Davison County scores 53 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

F53 / 100

Local infrastructure snapshot

Davison County, South Dakota

Davison County has 123 bridges in the National Bridge Inventory, with 22 rated poor and 4 rated scour-critical. Its poor-condition share of 17.9% is above the 16.1% statewide average. Poor-condition bridges carry about 5,504 daily vehicle crossings.

123Total Bridges

22Poor (17.9%)

60Fair (48.8%)

4Scour-Critical

Quote-Ready Local Facts

17.9%of county bridges are in poor condition, compared with 16.1% statewide and 6.7% nationally.

5,504daily vehicle crossings are on poor-condition bridges in the county.

4bridges are rated scour-critical, or 3.3% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Davison County a Bridge Condition Exposure Score of 53/100 (F). The county has 123 bridges in the National Bridge Inventory, including 22 in poor condition and 4 rated scour-critical. Poor-condition bridges carry about 5,504 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	17.9%	35.8
Poor-condition traffic exposure	25	3.4% of measured traffic	2.6
Scour-critical bridge share	20	3.3%	6.5
Average age vs national baseline	10	52 years vs 48 nationally	1.8
Traffic-data completeness	5	159,856 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	17.9%
State Poor-Condition Share	16.1%
National Poor-Condition Share	6.7%
County Scour-Critical Share	3.3%
Average Bridge Age	52 years
Poor-Condition Traffic Exposure	5,504 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeSd037 over Ck — 3,776 vehicles/day Oldest Listed Bridge403rd Avenue over Firesteel Ck — built in 1910 All County BridgesBrowse every bridge record in Davison County.

Top Bridges to Watch in Davison County

Bridge	Reason	Condition	Daily Traffic	Year Built
Sd037 over Ck	Poor condition + traffic exposure	Poor	3,776	1946
403rd Avenue over Firesteel Ck	Poor condition + traffic exposure	Poor	390	1910
Harmon Drive over Mitchell Lk	Poor condition + traffic exposure	Poor	350	2000
408th Avenue over South Fork Twelve Mile C	Poor condition + traffic exposure	Poor	81	1930
399th Avenue over North Br Twelve Mile Ck	Poor condition + traffic exposure	Poor	71	1972
398th Avenue over Enemy Ck	Poor condition + traffic exposure	Poor	64	1915
257th St. over Enemy Ck	Poor condition + traffic exposure	Poor	64	1920
407th Avenue over North Br Twelve Mile Ck	Poor condition + traffic exposure	Poor	64	1930
407th Avenue over North Br Twelve Mile Ck	Poor condition + traffic exposure	Poor	64	1930
399th Avenue over Enemy Ck	Poor condition + traffic exposure	Poor	64	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.