LA0129 over Ross Bayou
Concordia Parish, Louisiana · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- LA0129 over Ross Bayou in Concordia 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 2000, making it 25 years old at the 2025 inventory.
- It carries about 1,684 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 6 of the 42 inventoried bridges in Concordia Parish rated poor (14.3%); 6 (14.3%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It was rated fair in the 2024 inventory and is now poor (deck 5 to 4, superstructure 5 to 4).
- Its most recent inspection on record is dated February 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 → (31.52757, -91.7076)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 4 | Poor condition |
| Superstructure | 5 | 4 | Poor condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete slab |
| Length | about 116 ft |
| Location | 1.03 Mi North of La 565 |
| NBI structure number | 581503550101031 |
| Condition class | Poor |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | February 2024 |
| 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 Concordia Parish
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US0065 over Mississippi River | 1940 | 21,661 | Fair |
| US0065 over Mississippi River | 1989 | 20,933 | Fair |
| US0084 over Black River | 2009 | 7,080 | Fair |
| US0084 over Caney Bayou | 1932 | 6,163 | Poor |
| US0084 over Cross Bayou | 1977 | 6,163 | Good |
| US0065 over Carroll Bayou | 1981 | 5,796 | Good |
All bridges nearby: Concordia Parish, LA bridge conditions · every bridge in Concordia Parish · Louisiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.