Bridge conditions in Lafourche Parish, Louisiana
130 inventoried bridges · 20 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
About one in 6 bridges in Lafourche Parish is rated in poor condition: 20 of 130 on the federal inventory, one of the higher shares in Louisiana.
- 20 of the 130 bridges in Lafourche Parish, Louisiana, are rated in poor condition (15.4%) in the 2025 National Bridge Inventory, as of .
- 51 bridges (39.2%) are rated good and 59 (45.4%) fair.
- The median Lafourche Parish bridge was built in 1980.
- The busiest poor-rated bridge is LA0020 over Drainage Canal (built 1968), carrying about 20,091 vehicles a day.
Good 39.2% · Fair 45.4% · Poor 15.4% of 130 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| LA0020 over Drainage Canal | 1968 | 20,091 | Poor |
| LA3185 over Drain Canal | 1969 | 12,957 | Poor |
| LA0308 over Drainage Canal | 1965 | 11,623 | Poor |
| LA0001 over Co Canal Lockport | 1959 | 9,831 | Poor |
| LA0648 over Drain Canal | 1959 | 9,183 | Poor |
| LA0308 over Valentine Canal | 1964 | 8,181 | Poor |
| LA0308 over Bayou Lafourche | 1970 | 5,198 | Poor |
| LA0308 over Lebreton Canal | 1963 | 5,198 | Poor |
| LA0308 over Scully Canal | 1954 | 5,198 | Poor |
| LA0655 over Bayou Lafourche | 1940 | 2,380 | Poor |
| Lefort Bypass over Cut Off Bayou | 1971 | 2,222 | Poor |
| LA0316 over St Louis Canal | 1972 | 1,292 | Poor |
| Sanchez Rd over Grand Bayou | 1955 | 901 | Poor |
| Mary Beth Ave over Hollywood Canal | 1968 | 411 | Poor |
| LA0653 over Bayou Dumar | 1960 | 273 | Poor |
| Hamilton St over Forty Arpent Canal | 1960 | 204 | Poor |
| Cypress Ave over Bayou Pointe Au Chene | 1987 | 193 | Poor |
| Oak Ridge Park Rd over Canal | 1981 | 81 | Poor |
| Avenue E over Dresser Canal | 1952 | – | Poor |
| Valentine Bridge R over Lafourche Bayou | 1969 | – | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US0090 over Drainage Canal | 1976 | 27,665 | Fair |
| US0090 over Drainage Canal | 1976 | 27,665 | Good |
| US0090 over on Ramp From LA308 | 1976 | 26,058 | Good |
| LA0020 over 40 Arpent Canal | 1968 | 20,091 | Fair |
| LA0020 over Drainage Canal | 1968 | 20,091 | Good |
| LA0020 over Drainage Canal | 1968 | 20,091 | Poor |
| LA0020 over Drainage Canal | 1968 | 20,091 | Fair |
| US0090 over La 316 | 1980 | 14,769 | Fair |
| US0090 over Drainage Canal | 1982 | 14,769 | Fair |
| US0090 over Drainage Canal | 1982 | 14,769 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Louisiana: Louisiana bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.