Boone County Bridge Report Card

Boone County scores 80 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

B80 / 100

Local infrastructure snapshot

Boone County, Indiana

Boone County has 292 bridges in the National Bridge Inventory, with 12 rated poor and 15 rated scour-critical. Its poor-condition share of 4.1% is at or below the 5.3% statewide average. Poor-condition bridges carry about 14,715 daily vehicle crossings.

292Total Bridges

12Poor (4.1%)

162Fair (55.5%)

15Scour-Critical

Quote-Ready Local Facts

4.1%of county bridges are in poor condition, compared with 5.3% statewide and 6.7% nationally.

14,715daily vehicle crossings are on poor-condition bridges in the county.

15bridges are rated scour-critical, or 5.1% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Boone County a Bridge Condition Exposure Score of 80/100 (B). The county has 292 bridges in the National Bridge Inventory, including 12 in poor condition and 15 rated scour-critical. Poor-condition bridges carry about 14,715 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	4.1%	8.2
Poor-condition traffic exposure	25	0.9% of measured traffic	0.7
Scour-critical bridge share	20	5.1%	10.3
Average age vs national baseline	10	51 years vs 48 nationally	1.2
Traffic-data completeness	5	1,668,053 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	4.1%
State Poor-Condition Share	5.3%
National Poor-Condition Share	6.7%
County Scour-Critical Share	5.1%
Average Bridge Age	51 years
Poor-Condition Traffic Exposure	14,715 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeSR 32 over Finley Creek — 7,502 vehicles/day Oldest Listed BridgeCaldwell Road over Browns Wonder Creek — built in 1893 All County BridgesBrowse every bridge record in Boone County.

Top Bridges to Watch in Boone County

Bridge	Reason	Condition	Daily Traffic	Year Built
SR 32 over Finley Creek	Poor condition + traffic exposure	Poor	7,502	1958
SR 38 over Stoker Ditch	Poor condition + traffic exposure	Poor	329	1966
CR 600w over W Fork Big Walnut Creek	Poor condition + traffic exposure	Poor	200	1980
US 52 WB over I-65 Sb/nb	Poor condition + traffic exposure	Poor	4,664	1970
CR 100s over Prairie Creek	Poor condition + traffic exposure	Poor	850	1920
CR 1000e over Big Eagle Creek	Poor condition + traffic exposure	Poor	300	1925
CR 600e over Mounts Run	Poor condition + traffic exposure	Poor	260	1930
Hazelrigg Road over Deer Creek	Poor condition + traffic exposure	Poor	230	1935
CR 875w over Walnut Fork Sugar CR	Poor condition + traffic exposure	Poor	120	1925
Mdl Jamestown RD over Cunningham Ditch	Poor condition + traffic exposure	Poor	120	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.