Winona County Bridge Report Card

Winona County scores 91 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

A91 / 100

Local infrastructure snapshot

Winona County, Minnesota

Winona County has 237 bridges in the National Bridge Inventory, with 9 rated poor and 1 rated scour-critical. Its poor-condition share of 3.8% is at or below the 4.5% statewide average. Poor-condition bridges carry about 6,208 daily vehicle crossings.

237Total Bridges

9Poor (3.8%)

128Fair (54.0%)

1Scour-Critical

Quote-Ready Local Facts

3.8%of county bridges are in poor condition, compared with 4.5% statewide and 6.7% nationally.

6,208daily vehicle crossings are on poor-condition bridges in the county.

1bridges are rated scour-critical, or 0.4% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Winona County a Bridge Condition Exposure Score of 91/100 (A). The county has 237 bridges in the National Bridge Inventory, including 9 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 6,208 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	3.8%	7.6
Poor-condition traffic exposure	25	1.2% of measured traffic	0.9
Scour-critical bridge share	20	0.4%	0.8
Average age vs national baseline	10	42 years vs 48 nationally	0.0
Traffic-data completeness	5	537,137 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	3.8%
State Poor-Condition Share	4.5%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.4%
Average Bridge Age	42 years
Poor-Condition Traffic Exposure	6,208 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeM 109 over East Burns Creek — 2,250 vehicles/day Oldest Listed BridgeT 315 over Stream — built in 1915 All County BridgesBrowse every bridge record in Winona County.

Top Bridges to Watch in Winona County

Bridge	Reason	Condition	Daily Traffic	Year Built
M 109 over East Burns Creek	Poor condition + traffic exposure	Poor	2,250	1939
Mn 74 over S Fk Whitewater River	Poor condition + traffic exposure	Poor	1,785	1941
Csah 26 over Whitewater River	Poor condition + traffic exposure	Poor	1,100	1965
Mn 74 over Mid Fk Whitewater River	Poor condition + traffic exposure	Poor	807	1964
M 332 over Gilmore Creek	Poor condition + traffic exposure	Poor	100	1974
Csah 25 over Rush Creek	Poor condition + traffic exposure	Poor	100	1979
T 131 over Stream	Poor condition + traffic exposure	Poor	45	1918
T 309 over Trout Run Creek	Poor condition + traffic exposure	Poor	20	1918
T 663 over E Burns Valley Creek	Poor condition + traffic exposure	Poor	1	1968
Mn 43 over Miss Rvr Rr Streets	Scour-critical foundation rating	Fair	4,905	1941

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.