Portage County Bridge Report Card

Portage County scores 92 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

A92 / 100

Local infrastructure snapshot

Portage County, Wisconsin

Portage County has 183 bridges in the National Bridge Inventory, with 4 rated poor and 3 rated scour-critical. Its poor-condition share of 2.2% is at or below the 6.7% statewide average. Poor-condition bridges carry about 2,024 daily vehicle crossings.

183Total Bridges

4Poor (2.2%)

89Fair (48.6%)

3Scour-Critical

Quote-Ready Local Facts

2.2%of county bridges are in poor condition, compared with 6.7% statewide and 6.7% nationally.

2,024daily vehicle crossings are on poor-condition bridges in the county.

3bridges are rated scour-critical, or 1.6% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Portage County a Bridge Condition Exposure Score of 92/100 (A). The county has 183 bridges in the National Bridge Inventory, including 4 in poor condition and 3 rated scour-critical. Poor-condition bridges carry about 2,024 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	2.2%	4.4
Poor-condition traffic exposure	25	0.2% of measured traffic	0.2
Scour-critical bridge share	20	1.6%	3.3
Average age vs national baseline	10	34 years vs 48 nationally	0.0
Traffic-data completeness	5	876,644 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	2.2%
State Poor-Condition Share	6.7%
National Poor-Condition Share	6.7%
County Scour-Critical Share	1.6%
Average Bridge Age	34 years
Poor-Condition Traffic Exposure	2,024 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeCth O over Mill Creek — 1,250 vehicles/day Oldest Listed BridgeLrd Dewey DR over Hay Meadow Creek — built in 1922 All County BridgesBrowse every bridge record in Portage County.

Top Bridges to Watch in Portage County

Bridge	Reason	Condition	Daily Traffic	Year Built
Lrd Washington ST over Tomorrow River	Poor condition + traffic exposure	Poor	101	1938
Cth O over Mill Creek	Poor condition + traffic exposure	Poor	1,250	1975
Cth Ww over Four Mile Creek	Poor condition + traffic exposure	Poor	565	2007
Cth II over Bear Creek	Poor condition + traffic exposure	Poor	108	1975
Lrd Dewey DR over Hay Meadow Creek	Scour-critical foundation rating	Fair	218	1922
Lrd Hay Meadow DR over Hay Meadow Creek	Scour-critical foundation rating	Fair	61	1922
IH Ush 51-ih 39 over Hay Meadow Creek	High traffic	Good	29,800	1972
Ush 10 over IH Ush 51-ih 39	High traffic	Fair	25,755	1968
IH Ush51-ih39nb over Cth B	High traffic	Fair	24,620	1969
IH Ush51-ih39sb over Cth B	High traffic	Fair	24,620	1969

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.