Winnebago County Bridge Report Card

Winnebago County scores 86 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

B86 / 100

Local infrastructure snapshot

Winnebago County, Wisconsin

Winnebago County has 265 bridges in the National Bridge Inventory, with 8 rated poor and 11 rated scour-critical. Its poor-condition share of 3.0% is at or below the 6.7% statewide average. Poor-condition bridges carry about 1,213 daily vehicle crossings.

265Total Bridges

8Poor (3.0%)

94Fair (35.5%)

11Scour-Critical

Quote-Ready Local Facts

3.0%of county bridges are in poor condition, compared with 6.7% statewide and 6.7% nationally.

1,213daily vehicle crossings are on poor-condition bridges in the county.

11bridges are rated scour-critical, or 4.2% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Winnebago County a Bridge Condition Exposure Score of 86/100 (B). The county has 265 bridges in the National Bridge Inventory, including 8 in poor condition and 11 rated scour-critical. Poor-condition bridges carry about 1,213 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	3.0%	6.0
Poor-condition traffic exposure	25	0.0% of measured traffic	0.0
Scour-critical bridge share	20	4.2%	8.3
Average age vs national baseline	10	33 years vs 48 nationally	0.0
Traffic-data completeness	5	3,271,323 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	3.0%
State Poor-Condition Share	6.7%
National Poor-Condition Share	6.7%
County Scour-Critical Share	4.2%
Average Bridge Age	33 years
Poor-Condition Traffic Exposure	1,213 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeCth-ff over Eight Mile Creek — 730 vehicles/day Oldest Listed BridgeLrd Burr Oak RD over Eight Mile Creek — built in 1920 All County BridgesBrowse every bridge record in Winnebago County.

Top Bridges to Watch in Winnebago County

Bridge	Reason	Condition	Daily Traffic	Year Built
Cth-ff over Eight Mile Creek	Poor condition + traffic exposure	Poor	730	1954
Lrd 9th ST RD over Spring Brook	Poor condition + traffic exposure	Poor	82	1932
Lrd Quigley RD over Lake Poygan Trib	Poor condition + traffic exposure	Poor	40	1920
Lrd Woodenshoe RD over Neenah Slough	Poor condition + traffic exposure	Poor	38	1925
Lrd Apache AVE over Adler Creek	Poor condition + traffic exposure	Poor	35	1927
Lrd W 35th AVE over Merrits Creek	Poor condition + traffic exposure	Poor	153	1980
Lrd Onpratt Trail over Lake Winnebago	Poor condition + traffic exposure	Poor	115	1921
Lrd Access RD over Menasha Channel	Poor condition + traffic exposure	Poor	20	1960
Sth 44 over Eight Mile Creek	Scour-critical foundation rating	Fair	7,500	1938
Lrd W 28th AVE (de over Merritts Creek	Scour-critical foundation rating	Fair	200	1968

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.