LA0058 over Drainage Canal
Terrebonne Parish, Louisiana · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- LA0058 over Drainage Canal in Terrebonne 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 1966, making it 59 years old at the 2025 inventory.
- It carries about 5,194 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 22 of the 214 inventoried bridges in Terrebonne Parish rated poor (10.3%); 22 (10.3%) 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 May 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 → (29.47966, -90.5747)
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 57 ft |
| Location | .36 Mi East of La 56 |
| NBI structure number | 025502473000361 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | May 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 Terrebonne Parish
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| LA0024 over Bayou Terrebonne | 2006 | 30,800 | Fair |
| LA0024 over Intracoastal Waterway | 1996 | 29,371 | Good |
| LA0024 over Sprr & La 20 | 1970 | 28,505 | Fair |
| LA0024 over Cane Bayou | 1960 | 23,871 | Good |
| LA0024 over Bayou Terrebonne | 1998 | 22,400 | Good |
| LA0024 over Intracoastal Waterway | 1996 | 20,358 | Good |
All bridges nearby: Terrebonne Parish, LA bridge conditions · every bridge in Terrebonne Parish · Louisiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.