Johnson County Bridge Report Card

Johnson County scores 88 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

B88 / 100

Local infrastructure snapshot

Johnson County, Tennessee

Johnson County has 109 bridges in the National Bridge Inventory, with 5 rated poor and 0 rated scour-critical. Its poor-condition share of 4.6% is above the 4.4% statewide average. Poor-condition bridges carry about 1,783 daily vehicle crossings.

109Total Bridges

5Poor (4.6%)

57Fair (52.3%)

0Scour-Critical

Quote-Ready Local Facts

4.6%of county bridges are in poor condition, compared with 4.4% statewide and 6.7% nationally.

1,783daily vehicle crossings are on poor-condition bridges in the county.

0bridges are rated scour-critical, or 0.0% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Johnson County a Bridge Condition Exposure Score of 88/100 (B). The county has 109 bridges in the National Bridge Inventory, including 5 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 1,783 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	4.6%	9.2
Poor-condition traffic exposure	25	1.0% of measured traffic	0.7
Scour-critical bridge share	20	0.0%	0.0
Average age vs national baseline	10	54 years vs 48 nationally	2.4
Traffic-data completeness	5	179,966 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	4.6%
State Poor-Condition Share	4.4%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.0%
Average Bridge Age	54 years
Poor-Condition Traffic Exposure	1,783 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeFas 167 over Doe Creek — 1,413 vehicles/day Oldest Listed BridgeFas 91 over Elliot Branch — built in 1916 All County BridgesBrowse every bridge record in Johnson County.

Top Bridges to Watch in Johnson County

Bridge	Reason	Condition	Daily Traffic	Year Built
Fas 167 over Doe Creek	Poor condition + traffic exposure	Poor	1,413	1945
Nfa A409 (sa 4624) over Roan Creek	Poor condition + traffic exposure	Poor	160	1975
Nfa A375 over Roan Creek	Poor condition + traffic exposure	Poor	100	1962
Nfa A302 over Forge Creek	Poor condition + traffic exposure	Poor	70	1978
Nfa A064 over Doe Creek	Poor condition + traffic exposure	Poor	40	1975
Fap 34 over Furnace Creek	High traffic	Good	11,763	1954
Fap 34 over Goose Creek	High traffic	Good	8,381	2005
Fap 67 over Goose Creek	High traffic	Good	5,964	2011
Fap 34 over Forge Creek	High traffic	Good	5,818	1954
Fap 34 over Roan Creek	High traffic	Good	5,818	1954

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.