Doniphan County Bridge Report Card

Doniphan County scores 76 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C76 / 100

Local infrastructure snapshot

Doniphan County, Kansas

Doniphan County has 128 bridges in the National Bridge Inventory, with 11 rated poor and 3 rated scour-critical. Its poor-condition share of 8.6% is above the 5.2% statewide average. Poor-condition bridges carry about 3,299 daily vehicle crossings.

128Total Bridges

11Poor (8.6%)

52Fair (40.6%)

3Scour-Critical

Quote-Ready Local Facts

8.6%of county bridges are in poor condition, compared with 5.2% statewide and 6.7% nationally.

3,299daily vehicle crossings are on poor-condition bridges in the county.

3bridges are rated scour-critical, or 2.3% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Doniphan County a Bridge Condition Exposure Score of 76/100 (C). The county has 128 bridges in the National Bridge Inventory, including 11 in poor condition and 3 rated scour-critical. Poor-condition bridges carry about 3,299 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	8.6%	17.2
Poor-condition traffic exposure	25	3.4% of measured traffic	2.5
Scour-critical bridge share	20	2.3%	4.7
Average age vs national baseline	10	48 years vs 48 nationally	0.0
Traffic-data completeness	5	97,177 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	8.6%
State Poor-Condition Share	5.2%
National Poor-Condition Share	6.7%
County Scour-Critical Share	2.3%
Average Bridge Age	48 years
Poor-Condition Traffic Exposure	3,299 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeRs 2128 over Mission Creek — 2,435 vehicles/day Oldest Listed BridgeLocal T-51-2 over Independence Creek — built in 1900 All County BridgesBrowse every bridge record in Doniphan County.

Top Bridges to Watch in Doniphan County

Bridge	Reason	Condition	Daily Traffic	Year Built
Rs 201 over Stream	Poor condition + traffic exposure	Poor	175	1959
Rs 2128 over Mission Creek	Poor condition + traffic exposure	Poor	2,435	1939
K7 HWY over Mill Creek	Poor condition + traffic exposure	Poor	426	1949
Local T-831-2 over C. R.i.& &. Railroad	Poor condition + traffic exposure	Poor	100	1923
Rs 1784 over Stream	Poor condition + traffic exposure	Poor	66	1973
Minor T-35-1 over Squaw Creek	Poor condition + traffic exposure	Poor	40	1968
Local T-433-1 over Duncan Creek	Poor condition + traffic exposure	Poor	35	1923
Local T-538-2 over Trib. To Missouri River	Poor condition + traffic exposure	Poor	10	1970
Local T-731-1 over Mosquito Creek	Poor condition + traffic exposure	Poor	5	1920
Local T-723-1 over Trib. To Missouri River	Poor condition + traffic exposure	Poor	5	1965

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.