Miller County Bridge Report Card

Miller County scores 70 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C70 / 100

Local infrastructure snapshot

Miller County, Missouri

Miller County has 142 bridges in the National Bridge Inventory, with 16 rated poor and 2 rated scour-critical. Its poor-condition share of 11.3% is above the 8.8% statewide average. Poor-condition bridges carry about 9,919 daily vehicle crossings.

142Total Bridges

16Poor (11.3%)

73Fair (51.4%)

2Scour-Critical

Quote-Ready Local Facts

11.3%of county bridges are in poor condition, compared with 8.8% statewide and 6.7% nationally.

9,919daily vehicle crossings are on poor-condition bridges in the county.

2bridges are rated scour-critical, or 1.4% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Miller County a Bridge Condition Exposure Score of 70/100 (C). The county has 142 bridges in the National Bridge Inventory, including 16 in poor condition and 2 rated scour-critical. Poor-condition bridges carry about 9,919 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	11.3%	22.5
Poor-condition traffic exposure	25	3.5% of measured traffic	2.6
Scour-critical bridge share	20	1.4%	2.8
Average age vs national baseline	10	54 years vs 48 nationally	2.4
Traffic-data completeness	5	283,434 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	11.3%
State Poor-Condition Share	8.8%
National Poor-Condition Share	6.7%
County Scour-Critical Share	1.4%
Average Bridge Age	54 years
Poor-Condition Traffic Exposure	9,919 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeUS 54 E over Bu 54 — 6,847 vehicles/day Oldest Listed BridgeHays DR over Saline CR — built in 1900 All County BridgesBrowse every bridge record in Miller County.

Top Bridges to Watch in Miller County

Bridge	Reason	Condition	Daily Traffic	Year Built
US 54 E over Bu 54	Poor condition + traffic exposure	Poor	6,847	1973
Mo 42 E over Spring Br	Poor condition + traffic exposure	Poor	2,252	1964
Swinging Br RD over Grand Auglaize	Poor condition + traffic exposure	Poor	250	1920
Old Tuscumbia RD over Saline CR	Poor condition + traffic exposure	Poor	100	1930
Klass RD over Saline CR	Poor condition + traffic exposure	Poor	90	1930
Olean RD over Blythes CR	Poor condition + traffic exposure	Poor	55	1930
Blackmer RD over Lit Bear CR	Poor condition + traffic exposure	Poor	55	1930
Kemna Bridge RD over Tavern CR	Poor condition + traffic exposure	Poor	45	1910
Sparks RD over Blythes CR	Poor condition + traffic exposure	Poor	45	1920
Bluespring RD over Lit Gravois CR	Poor condition + traffic exposure	Poor	45	1930

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.