Mahaska County Bridge Report Card

Mahaska County scores 54 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

F54 / 100

Local infrastructure snapshot

Mahaska County, Iowa

Mahaska County has 221 bridges in the National Bridge Inventory, with 67 rated poor and 0 rated scour-critical. Its poor-condition share of 30.3% is above the 18.6% statewide average. Poor-condition bridges carry about 8,281 daily vehicle crossings.

221Total Bridges

67Poor (30.3%)

89Fair (40.3%)

0Scour-Critical

Quote-Ready Local Facts

30.3%of county bridges are in poor condition, compared with 18.6% statewide and 6.7% nationally.

8,281daily 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 Mahaska County a Bridge Condition Exposure Score of 54/100 (F). The county has 221 bridges in the National Bridge Inventory, including 67 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 8,281 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	30.3%	40.0
Poor-condition traffic exposure	25	4.8% of measured traffic	3.6
Scour-critical bridge share	20	0.0%	0.0
Average age vs national baseline	10	53 years vs 48 nationally	2.0
Traffic-data completeness	5	173,912 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	30.3%
State Poor-Condition Share	18.6%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.0%
Average Bridge Age	53 years
Poor-Condition Traffic Exposure	8,281 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeOld Ia 102 over Buckley Creek — 2,340 vehicles/day Oldest Listed BridgeLocal over Cedar Creek — built in 1900 All County BridgesBrowse every bridge record in Mahaska County.

Top Bridges to Watch in Mahaska County

Bridge	Reason	Condition	Daily Traffic	Year Built
Old Ia 102 over Buckley Creek	Poor condition + traffic exposure	Poor	2,340	1967
FM over Cedar Creek	Poor condition + traffic exposure	Poor	470	1963
FM over S Skunk River	Poor condition + traffic exposure	Poor	430	1967
FM over N Skunk River Overflow	Poor condition + traffic exposure	Poor	370	1961
FM over Over Up Rr	Poor condition + traffic exposure	Poor	370	1961
FM over N Skunk River	Poor condition + traffic exposure	Poor	370	1966
FM over So Skunk River	Poor condition + traffic exposure	Poor	290	1956
Local over Little Muchakinock	Poor condition + traffic exposure	Poor	290	1965
Local over Muchakinock Creek	Poor condition + traffic exposure	Poor	180	1949
FM over N Skunk River	Poor condition + traffic exposure	Poor	140	1951

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.