Johnston County Bridge Report Card

Johnston County scores 89 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

B89 / 100

Local infrastructure snapshot

Johnston County, Oklahoma

Johnston County has 154 bridges in the National Bridge Inventory, with 6 rated poor and 2 rated scour-critical. Its poor-condition share of 3.9% is at or below the 7.5% statewide average. Poor-condition bridges carry about 449 daily vehicle crossings.

154Total Bridges

6Poor (3.9%)

94Fair (61.0%)

2Scour-Critical

Quote-Ready Local Facts

3.9%of county bridges are in poor condition, compared with 7.5% statewide and 6.7% nationally.

449daily vehicle crossings are on poor-condition bridges in the county.

2bridges are rated scour-critical, or 1.3% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Johnston County a Bridge Condition Exposure Score of 89/100 (B). The county has 154 bridges in the National Bridge Inventory, including 6 in poor condition and 2 rated scour-critical. Poor-condition bridges carry about 449 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	3.9%	7.8
Poor-condition traffic exposure	25	0.5% of measured traffic	0.3
Scour-critical bridge share	20	1.3%	2.6
Average age vs national baseline	10	49 years vs 48 nationally	0.6
Traffic-data completeness	5	98,575 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	3.9%
State Poor-Condition Share	7.5%
National Poor-Condition Share	6.7%
County Scour-Critical Share	1.3%
Average Bridge Age	49 years
Poor-Condition Traffic Exposure	449 vehicles/day

Bridges to Watch

Busiest Poor-Condition Bridge3542c over Creek — 140 vehicles/day Oldest Listed BridgeN3630 over Creek — built in 1918 All County BridgesBrowse every bridge record in Johnston County.

Top Bridges to Watch in Johnston County

Bridge	Reason	Condition	Daily Traffic	Year Built
3542c over Creek	Poor condition + traffic exposure	Poor	140	1984
E1917 over Creek	Poor condition + traffic exposure	Poor	100	1948
E1870 over Sandy Creek	Poor condition + traffic exposure	Poor	100	1940
E1954 over Camp Creek	Poor condition + traffic exposure	Poor	50	1946
Old St. Hwy. 22 over Big Sandy Creek	Poor condition + traffic exposure	Poor	35	1920
E1880 over Creek	Poor condition + traffic exposure	Poor	24	1968
S.h. 22 over Pennington Creek	High traffic	Fair	7,000	1954
S.h. 22 over Sand Creek	High traffic	Good	4,100	1964
S.h. 22 over Rock Creek	High traffic	Fair	3,700	1964
S.h. 22 over Little Sandy Creek	High traffic	Fair	3,700	1975

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.