Grant County Bridge Report Card

Grant County scores 85 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

B85 / 100

Local infrastructure snapshot

Grant County, Oklahoma

Grant County has 477 bridges in the National Bridge Inventory, with 31 rated poor and 2 rated scour-critical. Its poor-condition share of 6.5% is at or below the 7.5% statewide average. Poor-condition bridges carry about 1,634 daily vehicle crossings.

477Total Bridges

31Poor (6.5%)

308Fair (64.6%)

2Scour-Critical

Quote-Ready Local Facts

6.5%of county bridges are in poor condition, compared with 7.5% statewide and 6.7% nationally.

1,634daily vehicle crossings are on poor-condition bridges in the county.

2bridges are rated scour-critical, or 0.4% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Grant County a Bridge Condition Exposure Score of 85/100 (B). The county has 477 bridges in the National Bridge Inventory, including 31 in poor condition and 2 rated scour-critical. Poor-condition bridges carry about 1,634 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	6.5%	13.0
Poor-condition traffic exposure	25	1.5% of measured traffic	1.1
Scour-critical bridge share	20	0.4%	0.8
Average age vs national baseline	10	37 years vs 48 nationally	0.0
Traffic-data completeness	5	107,500 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	6.5%
State Poor-Condition Share	7.5%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.4%
Average Bridge Age	37 years
Poor-Condition Traffic Exposure	1,634 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeN2920 over Creek — 450 vehicles/day Oldest Listed BridgeS.h. 11 over Creek — built in 1926 All County BridgesBrowse every bridge record in Grant County.

Top Bridges to Watch in Grant County

Bridge	Reason	Condition	Daily Traffic	Year Built
E0260 over Creek	Poor condition + traffic exposure	Poor	75	1936
N3010 over Cottonwood Creek	Poor condition + traffic exposure	Poor	24	1990
N2920 over Creek	Poor condition + traffic exposure	Poor	450	1995
N3020 over Polecat Creek	Poor condition + traffic exposure	Poor	100	1930
E0250 over Creek	Poor condition + traffic exposure	Poor	100	1950
N3020 over Creek	Poor condition + traffic exposure	Poor	100	1951
E0250 over Creek	Poor condition + traffic exposure	Poor	75	1987
E0010 over Chikaskia River	Poor condition + traffic exposure	Poor	50	1950
N3010 over Creek	Poor condition + traffic exposure	Poor	50	1955
E0160 over Big Antelope Creek	Poor condition + traffic exposure	Poor	50	1960

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.