Columbia County Bridge Report Card

Columbia County scores 77 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C77 / 100

Local infrastructure snapshot

Columbia County, Wisconsin

Columbia County has 182 bridges in the National Bridge Inventory, with 17 rated poor and 4 rated scour-critical. Its poor-condition share of 9.3% is above the 6.7% statewide average. Poor-condition bridges carry about 3,920 daily vehicle crossings.

182Total Bridges

17Poor (9.3%)

119Fair (65.4%)

4Scour-Critical

Quote-Ready Local Facts

9.3%of county bridges are in poor condition, compared with 6.7% statewide and 6.7% nationally.

3,920daily vehicle crossings are on poor-condition bridges in the county.

4bridges are rated scour-critical, or 2.2% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Columbia County a Bridge Condition Exposure Score of 77/100 (C). The county has 182 bridges in the National Bridge Inventory, including 17 in poor condition and 4 rated scour-critical. Poor-condition bridges carry about 3,920 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	9.3%	18.7
Poor-condition traffic exposure	25	0.4% of measured traffic	0.3
Scour-critical bridge share	20	2.2%	4.4
Average age vs national baseline	10	47 years vs 48 nationally	0.0
Traffic-data completeness	5	965,670 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	9.3%
State Poor-Condition Share	6.7%
National Poor-Condition Share	6.7%
County Scour-Critical Share	2.2%
Average Bridge Age	47 years
Poor-Condition Traffic Exposure	3,920 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeCth J over Spring Creek — 792 vehicles/day Oldest Listed BridgeLrd Mill ST over Union Pacific Rr — built in 1900 All County BridgesBrowse every bridge record in Columbia County.

Top Bridges to Watch in Columbia County

Bridge	Reason	Condition	Daily Traffic	Year Built
Cth Cm over Fox River	Poor condition + traffic exposure	Poor	500	1958
Cth J over Spring Creek	Poor condition + traffic exposure	Poor	792	1956
Cth Cm over Neenah Creek	Poor condition + traffic exposure	Poor	500	1959
Cth Vj over Rocky Run Creek	Poor condition + traffic exposure	Poor	470	1956
Cth X over Big Slough	Poor condition + traffic exposure	Poor	451	1958
Cth Cd over S Br Crawfish River	Poor condition + traffic exposure	Poor	228	1969
Cth A over Union Pacific Rr	Poor condition + traffic exposure	Poor	197	1910
Lrd E Bush RD over N Br Duck Creek	Poor condition + traffic exposure	Poor	153	1959
Cth E over Fox River	Poor condition + traffic exposure	Poor	149	1955
Cth Z over N Br Crawfish River	Poor condition + traffic exposure	Poor	99	1966

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.