Franklin County Bridge Report Card

Franklin County scores 68 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

D68 / 100

Local infrastructure snapshot

Franklin County, Iowa

Franklin County has 227 bridges in the National Bridge Inventory, with 28 rated poor and 7 rated scour-critical. Its poor-condition share of 12.3% is at or below the 18.6% statewide average. Poor-condition bridges carry about 3,269 daily vehicle crossings.

227Total Bridges

28Poor (12.3%)

96Fair (42.3%)

7Scour-Critical

Quote-Ready Local Facts

12.3%of county bridges are in poor condition, compared with 18.6% statewide and 6.7% nationally.

3,269daily vehicle crossings are on poor-condition bridges in the county.

7bridges are rated scour-critical, or 3.1% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Franklin County a Bridge Condition Exposure Score of 68/100 (D). The county has 227 bridges in the National Bridge Inventory, including 28 in poor condition and 7 rated scour-critical. Poor-condition bridges carry about 3,269 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	12.3%	24.7
Poor-condition traffic exposure	25	1.4% of measured traffic	1.1
Scour-critical bridge share	20	3.1%	6.2
Average age vs national baseline	10	43 years vs 48 nationally	0.0
Traffic-data completeness	5	231,275 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	12.3%
State Poor-Condition Share	18.6%
National Poor-Condition Share	6.7%
County Scour-Critical Share	3.1%
Average Bridge Age	43 years
Poor-Condition Traffic Exposure	3,269 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeFM 255th ST over Beaverdam Creek — 687 vehicles/day Oldest Listed Bridge3rd AVE (ext) over Beeds Creek — built in 1900 All County BridgesBrowse every bridge record in Franklin County.

Top Bridges to Watch in Franklin County

Bridge	Reason	Condition	Daily Traffic	Year Built
FM Spruce AVE over Maynes Creek	Poor condition + traffic exposure	Poor	49	1952
Local 40th ST over Beaver Creek	Poor condition + traffic exposure	Poor	35	1954
175th Street over Small Stream	Poor condition + traffic exposure	Poor	35	1968
FM 255th ST over Beaverdam Creek	Poor condition + traffic exposure	Poor	687	1969
6th ST NW over Drainage	Poor condition + traffic exposure	Poor	349	1940
FM over Iowa River	Poor condition + traffic exposure	Poor	320	1959
FM Nettle AVE over Beeds Creek	Poor condition + traffic exposure	Poor	295	1965
FM Lake Drive over Over Cnw Rr	Poor condition + traffic exposure	Poor	255	1936
FM Thrush AVE over Maynes Creek	Poor condition + traffic exposure	Poor	236	1971
Beeds Lake DR over Spring CR	Poor condition + traffic exposure	Poor	227	1967

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.