Lafayette County Bridge Report Card

Lafayette County scores 58 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

F58 / 100

Local infrastructure snapshot

Lafayette County, Wisconsin

Lafayette County has 217 bridges in the National Bridge Inventory, with 21 rated poor and 59 rated scour-critical. Its poor-condition share of 9.7% is above the 6.7% statewide average. Poor-condition bridges carry about 5,752 daily vehicle crossings.

217Total Bridges

21Poor (9.7%)

94Fair (43.3%)

59Scour-Critical

Quote-Ready Local Facts

9.7%of county bridges are in poor condition, compared with 6.7% statewide and 6.7% nationally.

5,752daily vehicle crossings are on poor-condition bridges in the county.

59bridges are rated scour-critical, or 27.2% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Lafayette County a Bridge Condition Exposure Score of 58/100 (F). The county has 217 bridges in the National Bridge Inventory, including 21 in poor condition and 59 rated scour-critical. Poor-condition bridges carry about 5,752 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	9.7%	19.4
Poor-condition traffic exposure	25	3.7% of measured traffic	2.8
Scour-critical bridge share	20	27.2%	20.0
Average age vs national baseline	10	48 years vs 48 nationally	0.0
Traffic-data completeness	5	153,419 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	9.7%
State Poor-Condition Share	6.7%
National Poor-Condition Share	6.7%
County Scour-Critical Share	27.2%
Average Bridge Age	48 years
Poor-Condition Traffic Exposure	5,752 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeSth 11 over Br Shullsburg Branch — 2,200 vehicles/day Oldest Listed BridgeLrd Richardson Lan over Galena River — built in 1917 All County BridgesBrowse every bridge record in Lafayette County.

Top Bridges to Watch in Lafayette County

Bridge	Reason	Condition	Daily Traffic	Year Built
Cth M over Br E Br Pecatonica River	Poor condition + traffic exposure	Poor	380	1948
Cth I over Ellis Branch	Poor condition + traffic exposure	Poor	293	1930
Cth E over Ames Branch	Poor condition + traffic exposure	Poor	282	1966
Cth E over Br Ames Branch	Poor condition + traffic exposure	Poor	282	1966
Lrd Twin Bridge RD over Galena River	Poor condition + traffic exposure	Poor	176	1965
Cth S over Canon Creek	Poor condition + traffic exposure	Poor	140	1961
Lrd Cisserville RD over E Br Pecatonica River	Poor condition + traffic exposure	Poor	105	1961
Cth Dd over Spafford Creek	Poor condition + traffic exposure	Poor	94	1959
Lrd Dunbarton RD over Trout Brook	Poor condition + traffic exposure	Poor	88	1929
Lrd Kingsley RD over Wolf Creek	Poor condition + traffic exposure	Poor	88	1930

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.