Bonne Idee RD over Bayou Bonne Idee
Morehouse Parish, Louisiana · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Bonne Idee RD over Bayou Bonne Idee in Morehouse Parish, Louisiana, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 1 (imminent failure condition) on the 0-9 scale.
- It was built in 1979, making it 46 years old at the 2025 inventory.
- It carries about 200 vehicles a day (traffic count year 1974).
- Its listed owner is the county highway agency.
- It is one of 19 of the 136 inventoried bridges in Morehouse Parish rated poor (14.0%); 19 (14.0%) are rated poor.
- Its traffic status in the 2025 inventory is closed to all traffic (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated October 2024, on a 12-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 → (32.92293, -91.66767)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 1 | 1 | Imminent failure condition |
Bridge details
| Structure | Timber stringer or multi-beam girder |
| Length | about 39 ft |
| Location | 0.3 Mi. E. of US 165 |
| NBI structure number | 053432553914021 |
| Condition class | Poor |
| Traffic status (item 41) | Closed to all traffic |
| Last inspection (item 90) | October 2024 |
| Inspection interval (item 91) | 12 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 Morehouse Parish
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US0165 over Tisdale Canal | 1978 | 12,405 | Fair |
| LA0139 over I.p. Drainage Canal | 1973 | 9,490 | Fair |
| LA1268 over Staulkinghead Creek | 1983 | 8,914 | Fair |
| US0425 over Bayou Bartholomew | 1985 | 7,629 | Fair |
| US0425 over Horse Bayou | 2012 | 5,676 | Fair |
| US0425 over Bayou Bartholomew | 2012 | 5,676 | Good |
All bridges nearby: Morehouse Parish, LA bridge conditions · every bridge in Morehouse Parish · Louisiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.