Grant County Bridge Report Card

Grant County scores 46 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

F46 / 100

Local infrastructure snapshot

Grant County, Louisiana

Grant County has 209 bridges in the National Bridge Inventory, with 30 rated poor and 15 rated scour-critical. Its poor-condition share of 14.4% is above the 11.2% statewide average. Poor-condition bridges carry about 38,423 daily vehicle crossings.

209Total Bridges

30Poor (14.4%)

104Fair (49.8%)

15Scour-Critical

Quote-Ready Local Facts

14.4%of county bridges are in poor condition, compared with 11.2% statewide and 6.7% nationally.

38,423daily vehicle crossings are on poor-condition bridges in the county.

15bridges are rated scour-critical, or 7.2% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Grant County a Bridge Condition Exposure Score of 46/100 (F). The county has 209 bridges in the National Bridge Inventory, including 30 in poor condition and 15 rated scour-critical. Poor-condition bridges carry about 38,423 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	14.4%	28.7
Poor-condition traffic exposure	25	14.0% of measured traffic	10.5
Scour-critical bridge share	20	7.2%	14.4
Average age vs national baseline	10	44 years vs 48 nationally	0.0
Traffic-data completeness	5	274,503 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	14.4%
State Poor-Condition Share	11.2%
National Poor-Condition Share	6.7%
County Scour-Critical Share	7.2%
Average Bridge Age	44 years
Poor-Condition Traffic Exposure	38,423 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeUs0167 over Mosley Mill Creek — 11,712 vehicles/day Oldest Listed BridgeSparrow Lane over Marteau Bayou — built in 1919 All County BridgesBrowse every bridge record in Grant County.

Top Bridges to Watch in Grant County

Bridge	Reason	Condition	Daily Traffic	Year Built
Us0071 over Bayou Rigolette	Poor condition + traffic exposure	Poor	2,063	1950
La0008 over Big Creek	Poor condition + traffic exposure	Poor	1,590	1968
La0366 over Sandy Creek	Poor condition + traffic exposure	Poor	368	1955
Us0167 over Mosley Mill Creek	Poor condition + traffic exposure	Poor	11,712	1975
Us0167 over Bear Creek	Poor condition + traffic exposure	Poor	11,712	1975
Us0165 over La 1230 Up Rr	Poor condition + traffic exposure	Poor	7,084	1956
Us0071 over Bayou Rigolette	Poor condition + traffic exposure	Poor	1,931	1950
La0122 over Creek	Poor condition + traffic exposure	Poor	683	1988
La0123 over Fish Creek	Poor condition + traffic exposure	Poor	595	1974
Selma Loop RD over Creek	Poor condition + traffic exposure	Poor	130	1970

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.