Winneshiek County Bridge Report Card

Winneshiek County scores 52 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

F52 / 100

Local infrastructure snapshot

Winneshiek County, Iowa

Winneshiek County has 342 bridges in the National Bridge Inventory, with 57 rated poor and 13 rated scour-critical. Its poor-condition share of 16.7% is at or below the 18.6% statewide average. Poor-condition bridges carry about 6,308 daily vehicle crossings.

342Total Bridges

57Poor (16.7%)

155Fair (45.3%)

13Scour-Critical

Quote-Ready Local Facts

16.7%of county bridges are in poor condition, compared with 18.6% statewide and 6.7% nationally.

6,308daily vehicle crossings are on poor-condition bridges in the county.

13bridges are rated scour-critical, or 3.8% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Winneshiek County a Bridge Condition Exposure Score of 52/100 (F). The county has 342 bridges in the National Bridge Inventory, including 57 in poor condition and 13 rated scour-critical. Poor-condition bridges carry about 6,308 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	16.7%	33.3
Poor-condition traffic exposure	25	4.3% of measured traffic	3.2
Scour-critical bridge share	20	3.8%	7.6
Average age vs national baseline	10	57 years vs 48 nationally	3.8
Traffic-data completeness	5	148,366 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	16.7%
State Poor-Condition Share	18.6%
National Poor-Condition Share	6.7%
County Scour-Critical Share	3.8%
Average Bridge Age	57 years
Poor-Condition Traffic Exposure	6,308 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeFM over Trout River — 953 vehicles/day Oldest Listed Bridge150th ST over Stream — built in 1892 All County BridgesBrowse every bridge record in Winneshiek County.

Top Bridges to Watch in Winneshiek County

Bridge	Reason	Condition	Daily Traffic	Year Built
Main ST over Small Natural Stream	Poor condition + traffic exposure	Poor	649	1940
Ferris Mill RD over Creek	Poor condition + traffic exposure	Poor	70	1900
Local over Creek	Poor condition + traffic exposure	Poor	70	1900
Coldwater Creek RD over Creek	Poor condition + traffic exposure	Poor	59	1978
FM over Upper Iowa River	Poor condition + traffic exposure	Poor	39	1913
FM over North Bear Creek	Poor condition + traffic exposure	Poor	39	1957
Local Road over Creek	Poor condition + traffic exposure	Poor	15	1972
Local Road over Creek	Poor condition + traffic exposure	Poor	5	1900
FM over Trout River	Poor condition + traffic exposure	Poor	953	1956
FM over Trout River	Poor condition + traffic exposure	Poor	697	1958

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.