Adair County Bridge Report Card

Adair County scores 69 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

D69 / 100

Local infrastructure snapshot

Adair County, Iowa

Adair County has 303 bridges in the National Bridge Inventory, with 37 rated poor and 10 rated scour-critical. Its poor-condition share of 12.2% is at or below the 18.6% statewide average. Poor-condition bridges carry about 1,647 daily vehicle crossings.

303Total Bridges

37Poor (12.2%)

121Fair (39.9%)

10Scour-Critical

Quote-Ready Local Facts

12.2%of county bridges are in poor condition, compared with 18.6% statewide and 6.7% nationally.

1,647daily vehicle crossings are on poor-condition bridges in the county.

10bridges are rated scour-critical, or 3.3% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Adair County a Bridge Condition Exposure Score of 69/100 (D). The county has 303 bridges in the National Bridge Inventory, including 37 in poor condition and 10 rated scour-critical. Poor-condition bridges carry about 1,647 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	12.2%	24.4
Poor-condition traffic exposure	25	0.5% of measured traffic	0.4
Scour-critical bridge share	20	3.3%	6.6
Average age vs national baseline	10	42 years vs 48 nationally	0.0
Traffic-data completeness	5	335,969 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	12.2%
State Poor-Condition Share	18.6%
National Poor-Condition Share	6.7%
County Scour-Critical Share	3.3%
Average Bridge Age	42 years
Poor-Condition Traffic Exposure	1,647 vehicles/day

Bridges to Watch

Busiest Poor-Condition Bridge3rd ST over Over Abandon Rr — 387 vehicles/day Oldest Listed Bridge3rd ST over Over Abandon Rr — built in 1900 All County BridgesBrowse every bridge record in Adair County.

Top Bridges to Watch in Adair County

Bridge	Reason	Condition	Daily Traffic	Year Built
Local over Middle River	Poor condition + traffic exposure	Poor	41	1958
Local over Middle Nodaway River	Poor condition + traffic exposure	Poor	21	1900
Local over Branch Middle River	Poor condition + traffic exposure	Poor	15	1948
200th ST over Stream	Poor condition + traffic exposure	Poor	11	1958
3rd ST over Over Abandon Rr	Poor condition + traffic exposure	Poor	387	1900
Thomas ST over Middle River	Poor condition + traffic exposure	Poor	120	1940
Russell ST over Middle River	Poor condition + traffic exposure	Poor	120	1940
FM over Stream	Poor condition + traffic exposure	Poor	89	1949
Local over Stream	Poor condition + traffic exposure	Poor	62	1940
Local over Creek	Poor condition + traffic exposure	Poor	62	1954

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.