Harrison County Bridge Report Card

Harrison County scores 79 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C79 / 100

Local infrastructure snapshot

Harrison County, Indiana

Harrison County has 128 bridges in the National Bridge Inventory, with 4 rated poor and 8 rated scour-critical. Its poor-condition share of 3.1% is at or below the 5.3% statewide average. Poor-condition bridges carry about 8,614 daily vehicle crossings.

128Total Bridges

4Poor (3.1%)

74Fair (57.8%)

8Scour-Critical

Quote-Ready Local Facts

3.1%of county bridges are in poor condition, compared with 5.3% statewide and 6.7% nationally.

8,614daily vehicle crossings are on poor-condition bridges in the county.

8bridges are rated scour-critical, or 6.2% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Harrison County a Bridge Condition Exposure Score of 79/100 (C). The county has 128 bridges in the National Bridge Inventory, including 4 in poor condition and 8 rated scour-critical. Poor-condition bridges carry about 8,614 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	3.1%	6.2
Poor-condition traffic exposure	25	2.7% of measured traffic	2.1
Scour-critical bridge share	20	6.2%	12.5
Average age vs national baseline	10	43 years vs 48 nationally	0.0
Traffic-data completeness	5	313,498 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	3.1%
State Poor-Condition Share	5.3%
National Poor-Condition Share	6.7%
County Scour-Critical Share	6.2%
Average Bridge Age	43 years
Poor-Condition Traffic Exposure	8,614 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeOld SR 337 over Little Indian Creek — 6,087 vehicles/day Oldest Listed BridgeSR 11 over South Fork Buck Creek — built in 1910 All County BridgesBrowse every bridge record in Harrison County.

Top Bridges to Watch in Harrison County

Bridge	Reason	Condition	Daily Traffic	Year Built
SR 11 over South Fork Buck Creek	Poor condition + traffic exposure	Poor	1,607	1966
Old SR 337 over Little Indian Creek	Poor condition + traffic exposure	Poor	6,087	1984
Old SR 337 over Buck Creek	Poor condition + traffic exposure	Poor	760	1965
ST John Church RD over Buck Creek	Poor condition + traffic exposure	Poor	160	1988
I-64 EB over Blue River Blue Road	Scour-critical foundation rating	Fair	16,250	1974
I-64 WB over Blue River Blue Road	Scour-critical foundation rating	Fair	16,250	1974
I-64 EB over Brush Heap Creek	Scour-critical foundation rating	Fair	15,403	1974
I-64 WB over Brush Heap Creek	Scour-critical foundation rating	Fair	14,800	1974
SR 62 over Little Indian Creek	Scour-critical foundation rating	Fair	4,610	1990
SR 62 over Blue River	Scour-critical foundation rating	Fair	1,151	1937

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.