Marion County Bridge Report Card

Marion County scores 78 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C78 / 100

Local infrastructure snapshot

Marion County, Missouri

Marion County has 186 bridges in the National Bridge Inventory, with 17 rated poor and 0 rated scour-critical. Its poor-condition share of 9.1% is above the 8.8% statewide average. Poor-condition bridges carry about 24,093 daily vehicle crossings.

186Total Bridges

17Poor (9.1%)

100Fair (53.8%)

0Scour-Critical

Quote-Ready Local Facts

9.1%of county bridges are in poor condition, compared with 8.8% statewide and 6.7% nationally.

24,093daily 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 Marion County a Bridge Condition Exposure Score of 78/100 (C). The county has 186 bridges in the National Bridge Inventory, including 17 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 24,093 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	9.1%	18.3
Poor-condition traffic exposure	25	4.9% of measured traffic	3.7
Scour-critical bridge share	20	0.0%	0.0
Average age vs national baseline	10	48 years vs 48 nationally	0.0
Traffic-data completeness	5	494,295 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	9.1%
State Poor-Condition Share	8.8%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.0%
Average Bridge Age	48 years
Poor-Condition Traffic Exposure	24,093 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeIs 72 E over Mississippi Rvr Cst 410 — 17,638 vehicles/day Oldest Listed BridgeCounty RD 143 over Troublesome CR — built in 1910 All County BridgesBrowse every bridge record in Marion County.

Top Bridges to Watch in Marion County

Bridge	Reason	Condition	Daily Traffic	Year Built
Is 72 E over Mississippi Rvr Cst 410	Poor condition + traffic exposure	Poor	17,638	2000
Mo 6 E over US 24	Poor condition + traffic exposure	Poor	3,910	1968
Bu 61 N over US 24	Poor condition + traffic exposure	Poor	1,448	1960
RT A S over Troublesome CR	Poor condition + traffic exposure	Poor	477	1954
County RD 153 over Br Of S Fabius Rvr	Poor condition + traffic exposure	Poor	65	1920
County RD 118 over Br Of Troublesome	Poor condition + traffic exposure	Poor	65	1925
County RD 262 over Bear CR	Poor condition + traffic exposure	Poor	65	1960
County RD 118 over Troublesome CR	Poor condition + traffic exposure	Poor	65	1975
County RD 230 over Big Br	Poor condition + traffic exposure	Poor	50	1925
County RD 110 over Troublesome CR	Poor condition + traffic exposure	Poor	50	1926

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.