LA0518 over Bayou Darbonne
Claiborne Parish, Louisiana · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- LA0518 over Bayou Darbonne in Claiborne Parish, Louisiana, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1979, making it 46 years old at the 2025 inventory.
- It carries about 389 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 33 of the 148 inventoried bridges in Claiborne Parish rated poor (22.3%); 33 (22.3%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated August 2023, on a 24-month routine inspection cycle.
- It is coded scour critical (NBI item 113 = 3): scour critical: foundations unstable for the assessed or calculated scour.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (32.73427, -92.8993)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 4 | 4 | Poor condition |
Bridge details
| Structure | Concrete slab |
| Length | about 133 ft |
| Location | 2.60 Mi North of La 146 |
| NBI structure number | 041401090302601 |
| Condition class | Poor |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 3: scour critical: foundations unstable for the assessed or calculated scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Louisiana department of transportation.
Busiest bridges in Claiborne Parish
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US0079 over Crows Creek | 1979 | 9,942 | Fair |
| US0079 over Drainage Creek | 1979 | 9,942 | Fair |
| US0079 over Caney Creek | 1930 | 5,728 | Fair |
| US0079 over Beaver Branch | 1979 | 5,728 | Fair |
| US0079 over Bayou Darbonne | 1979 | 5,728 | Fair |
| US0079 over Creek | 1936 | 5,728 | Fair |
All bridges nearby: Claiborne Parish, LA bridge conditions · every bridge in Claiborne Parish · Louisiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.