15th St over Bogue Chitto Creek
Washington Parish, Louisiana · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 15th St over Bogue Chitto Creek in Washington 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 1974, making it 51 years old at the 2025 inventory.
- It carries about 229 vehicles a day (traffic count year 2022).
- Its listed owner is a city or municipal highway agency.
- It is one of 29 of the 285 inventoried bridges in Washington Parish rated poor (10.2%); 29 (10.2%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its class is unchanged from 2024 (poor), but component ratings moved: substructure 3 to 4.
- Its most recent inspection on record is dated November 2024, 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 → (30.84389, -90.14616)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 3 | 4 | Poor condition |
Bridge details
| Structure | Concrete slab |
| Length | about 38 ft |
| Location | 15TH Ave South of La 10 |
| NBI structure number | 625930506900701 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | November 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | U: unknown foundation, not evaluated for scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Louisiana department of transportation.
Busiest bridges in Washington Parish
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Willis Ave. over Bogue Lusa Creek | 1962 | 15,320 | Fair |
| LA0010 over Bogue Chitto Relief | 1996 | 12,018 | Good |
| LA0010 over Bogue Chitto Relief | 1997 | 12,018 | Good |
| LA0010 over Bogue Chitto River | 1997 | 12,018 | Good |
| LA0060 over Bogue Lusa CR | 1965 | 11,719 | Fair |
| LA0010 over Lawrence Creek | 2014 | 10,686 | Good |
All bridges nearby: Washington Parish, LA bridge conditions · every bridge in Washington Parish · Louisiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.