LA0175 over Bayou Na Bonchasse Relie
De Soto Parish, Louisiana · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- LA0175 over Bayou Na Bonchasse Relie in De Soto Parish, Louisiana, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 2000, making it 25 years old at the 2025 inventory.
- It carries about 4,494 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 54 of the 201 inventoried bridges in De Soto Parish rated good (26.9%); 15 (7.5%) are rated poor.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (32.10122, -93.6971)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 24 ft |
| Location | 4.59 Mi N. of US 84 |
| NBI structure number | 041600350404591 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Louisiana department of transportation.
Busiest bridges in De Soto Parish
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I0049 over Asseff Rd | 1987 | 29,022 | Good |
| I0049 over Sweepco R/R | 1986 | 29,022 | Fair |
| I0049 over US 84 | 1985 | 29,022 | Fair |
| I0049 over Mundy Bayou | 1986 | 29,022 | Fair |
| I0049 over Buffalo Bayou | 1985 | 29,022 | Fair |
| I0049 over Siphorien Bayou | 1986 | 29,022 | Fair |
All bridges nearby: De Soto Parish, LA bridge conditions · every bridge in De Soto Parish · Louisiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.