Olsen ave over Barriere Road
Plaquemines Parish, Louisiana · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Olsen ave over Barriere Road in Plaquemines Parish, Louisiana, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1960, making it 65 years old at the 2025 inventory.
- Its listed owner is the county highway agency.
- It is one of 7 of the 35 inventoried bridges in Plaquemines Parish rated poor (20.0%); 7 (20.0%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated January 2023, on a 24-month routine inspection cycle.
- 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 → (29.85797, -90.0105)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 4 | 4 | Poor condition |
| Superstructure | 4 | 4 | Poor condition |
| Substructure | 4 | 4 | Poor condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 150 ft |
| Location | 1.8 Mi. S. of Hwy. 23 |
| NBI structure number | 023829515900061 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | January 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Louisiana department of transportation.
Busiest bridges in Plaquemines Parish
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| La 23 over Intercoastal Waterway | 2024 | 39,114 | Good |
| LA0023 over Algiers Outfall C | 1968 | 29,088 | Fair |
| LA0023 over I C Waterway | 1968 | 29,088 | Fair |
| LA0023 over Bayou Barriere | 1955 | 29,088 | Fair |
| LA0023 over Algiers Outfall Canal | 1968 | 25,594 | Fair |
| LA0023 over Bayou Barriere | 1968 | 25,594 | Fair |
All bridges nearby: Plaquemines Parish, LA bridge conditions · every bridge in Plaquemines Parish · Louisiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.