Sullivan County Bridge Report Card

Sullivan County scores 71 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C71 / 100

Local infrastructure snapshot

Sullivan County, Indiana

Sullivan County has 217 bridges in the National Bridge Inventory, with 11 rated poor and 11 rated scour-critical. Its poor-condition share of 5.1% is at or below the 5.3% statewide average. Poor-condition bridges carry about 11,167 daily vehicle crossings.

217Total Bridges

11Poor (5.1%)

141Fair (65.0%)

11Scour-Critical

Quote-Ready Local Facts

5.1%of county bridges are in poor condition, compared with 5.3% statewide and 6.7% nationally.

11,167daily vehicle crossings are on poor-condition bridges in the county.

11bridges are rated scour-critical, or 5.1% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Sullivan County a Bridge Condition Exposure Score of 71/100 (C). The county has 217 bridges in the National Bridge Inventory, including 11 in poor condition and 11 rated scour-critical. Poor-condition bridges carry about 11,167 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	5.1%	10.1
Poor-condition traffic exposure	25	6.3% of measured traffic	4.7
Scour-critical bridge share	20	5.1%	10.1
Average age vs national baseline	10	59 years vs 48 nationally	4.5
Traffic-data completeness	5	176,334 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	5.1%
State Poor-Condition Share	5.3%
National Poor-Condition Share	6.7%
County Scour-Critical Share	5.1%
Average Bridge Age	59 years
Poor-Condition Traffic Exposure	11,167 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeUS 41 NB over Busseron Creek — 6,687 vehicles/day Oldest Listed BridgeCR 300 S over Busseron Creek — built in 1899 All County BridgesBrowse every bridge record in Sullivan County.

Top Bridges to Watch in Sullivan County

Bridge	Reason	Condition	Daily Traffic	Year Built
CR 350 S over Unnamed Ditch	Poor condition + traffic exposure	Poor	1,020	1930
CR 600 E over Sulphur Creek	Poor condition + traffic exposure	Poor	140	1925
US 41 NB over Busseron Creek	Poor condition + traffic exposure	Poor	6,687	1972
SR 154 over Turman Creek	Poor condition + traffic exposure	Poor	2,300	1946
CR 75 N (90 N) over Morrison Creek	Poor condition + traffic exposure	Poor	190	1935
CR 1175 N over Branch Of Turman Creek	Poor condition + traffic exposure	Poor	190	1985
CR 50 N over Busseron Creek	Poor condition + traffic exposure	Poor	170	1975
CR 570 S over Branch Of Rodgers Ditch	Poor condition + traffic exposure	Poor	140	1930
CR 300 S over Busseron Creek	Poor condition + traffic exposure	Poor	110	1899
CR 975 S over Branch Of Maria Creek	Poor condition + traffic exposure	Poor	110	1910

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.