Jefferson County Bridge Report Card

Jefferson County scores 57 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

F57 / 100

Local infrastructure snapshot

Jefferson County, Iowa

Jefferson County has 156 bridges in the National Bridge Inventory, with 31 rated poor and 0 rated scour-critical. Its poor-condition share of 19.9% is above the 18.6% statewide average. Poor-condition bridges carry about 5,088 daily vehicle crossings.

156Total Bridges

31Poor (19.9%)

55Fair (35.3%)

0Scour-Critical

Quote-Ready Local Facts

19.9%of county bridges are in poor condition, compared with 18.6% statewide and 6.7% nationally.

5,088daily vehicle crossings are on poor-condition bridges in the county.

0bridges are rated scour-critical, or 0.0% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Jefferson County a Bridge Condition Exposure Score of 57/100 (F). The county has 156 bridges in the National Bridge Inventory, including 31 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 5,088 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	19.9%	39.7
Poor-condition traffic exposure	25	4.4% of measured traffic	3.3
Scour-critical bridge share	20	0.0%	0.0
Average age vs national baseline	10	42 years vs 48 nationally	0.0
Traffic-data completeness	5	116,584 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	19.9%
State Poor-Condition Share	18.6%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.0%
Average Bridge Age	42 years
Poor-Condition Traffic Exposure	5,088 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeE Burlington AVE over West Crow Creek — 2,100 vehicles/day Oldest Listed BridgeFM over Drainage — built in 1900 All County BridgesBrowse every bridge record in Jefferson County.

Top Bridges to Watch in Jefferson County

Bridge	Reason	Condition	Daily Traffic	Year Built
E Burlington AVE over West Crow Creek	Poor condition + traffic exposure	Poor	2,100	1954
FM over Big Cedar Creek	Poor condition + traffic exposure	Poor	1,050	1956
FM over Cedar Creek	Poor condition + traffic exposure	Poor	340	1957
FM over Rock Creek	Poor condition + traffic exposure	Poor	270	1964
FM over Brush Creek	Poor condition + traffic exposure	Poor	200	1988
FM over Lick Creek	Poor condition + traffic exposure	Poor	120	1951
Local over Creek	Poor condition + traffic exposure	Poor	110	1900
Spruce AVE over Stream	Poor condition + traffic exposure	Poor	100	1950
FM over Drainage	Poor condition + traffic exposure	Poor	60	1954
Local over Creek	Poor condition + traffic exposure	Poor	60	1959

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.