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Lafourche County Bridge Report Card

Lafourche County scores 57 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

F57 / 100
Local infrastructure snapshot

Lafourche County, Louisiana

Lafourche County has 130 bridges in the National Bridge Inventory, with 20 rated poor and 3 rated scour-critical. Its poor-condition share of 15.4% is above the 11.2% statewide average. Poor-condition bridges carry about 95,417 daily vehicle crossings.

130Total Bridges
20Poor (15.4%)
59Fair (45.4%)
3Scour-Critical

Quote-Ready Local Facts

15.4%of county bridges are in poor condition, compared with 11.2% statewide and 6.7% nationally.
95,417daily vehicle crossings are on poor-condition bridges in the county.
3bridges are rated scour-critical, or 2.3% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Lafourche County a Bridge Condition Exposure Score of 57/100 (F). The county has 130 bridges in the National Bridge Inventory, including 20 in poor condition and 3 rated scour-critical. Poor-condition bridges carry about 95,417 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

FactorWeightCounty ValuePenalty
Poor-condition bridge share4015.4%30.8
Poor-condition traffic exposure2510.6% of measured traffic8.0
Scour-critical bridge share202.3%4.6
Average age vs national baseline1044 years vs 48 nationally0.0
Traffic-data completeness5898,762 measured daily crossings0.0

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 Share15.4%
State Poor-Condition Share11.2%
National Poor-Condition Share6.7%
County Scour-Critical Share2.3%
Average Bridge Age44 years
Poor-Condition Traffic Exposure95,417 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeLa0020 over Drainage Canal — 20,091 vehicles/dayOldest Listed BridgeLa0182 over Bayou Lafourche — built in 1936All County BridgesBrowse every bridge record in Lafourche County.

Top Bridges to Watch in Lafourche County

BridgeReasonConditionDaily TrafficYear Built
La0020 over Drainage CanalPoor condition + traffic exposurePoor20,0911968
La3185 over Drain CanalPoor condition + traffic exposurePoor12,9571969
La0308 over Drainage CanalPoor condition + traffic exposurePoor11,6231965
La0001 over Co Canal LockportPoor condition + traffic exposurePoor9,8311959
La0648 over Drain CanalPoor condition + traffic exposurePoor9,1831959
La0308 over Valentine CanalPoor condition + traffic exposurePoor8,1811964
La0308 over Scully CanalPoor condition + traffic exposurePoor5,1981954
La0308 over Lebreton CanalPoor condition + traffic exposurePoor5,1981963
La0308 over Bayou LafourchePoor condition + traffic exposurePoor5,1981970
La0655 over Bayou LafourchePoor condition + traffic exposurePoor2,3801940

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.