Logan County Bridge Report Card

Logan County scores 96 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

A96 / 100

Local infrastructure snapshot

Logan County, Ohio

Logan County has 283 bridges in the National Bridge Inventory, with 3 rated poor and 2 rated scour-critical. Its poor-condition share of 1.1% is at or below the 4.7% statewide average. Poor-condition bridges carry about 1,172 daily vehicle crossings.

283Total Bridges

3Poor (1.1%)

61Fair (21.6%)

2Scour-Critical

Quote-Ready Local Facts

1.1%of county bridges are in poor condition, compared with 4.7% statewide and 6.7% nationally.

1,172daily vehicle crossings are on poor-condition bridges in the county.

2bridges are rated scour-critical, or 0.7% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Logan County a Bridge Condition Exposure Score of 96/100 (A). The county has 283 bridges in the National Bridge Inventory, including 3 in poor condition and 2 rated scour-critical. Poor-condition bridges carry about 1,172 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	1.1%	2.1
Poor-condition traffic exposure	25	0.2% of measured traffic	0.2
Scour-critical bridge share	20	0.7%	1.4
Average age vs national baseline	10	46 years vs 48 nationally	0.0
Traffic-data completeness	5	504,754 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	1.1%
State Poor-Condition Share	4.7%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.7%
Average Bridge Age	46 years
Poor-Condition Traffic Exposure	1,172 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeCR 21b over Miami River — 816 vehicles/day Oldest Listed BridgeCR 13 over Great Miami River — built in 1876 All County BridgesBrowse every bridge record in Logan County.

Top Bridges to Watch in Logan County

Bridge	Reason	Condition	Daily Traffic	Year Built
CR 21b over Miami River	Poor condition + traffic exposure	Poor	816	1882
CR 101 over Branch So Fork Miami Riv	Poor condition + traffic exposure	Poor	206	1934
Tr 30 over Stony Creek	Poor condition + traffic exposure	Poor	150	1922
CR 11 over Blue Jacket Creek	Scour-critical foundation rating	Good	3,475	1965
CR 13 over Bokengehalas Creek	Scour-critical foundation rating	Fair	618	1966
Usr 33 over Otter Creek	High traffic	Good	20,551	1996
Usr 33 over Van Hyning Ditch #750	High traffic	Fair	20,234	1996
Usr 33 over Abandoned Rr	High traffic	Fair	11,483	1960
Sr-47 over Penn Central Rr	High traffic	Fair	10,497	1970
Usr 33 over CR 5 & Fish Pond Channel	High traffic	Good	10,117	1963

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.