Sparrow Lane over Marteau Bayou
Grant Parish, Louisiana · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Sparrow Lane over Marteau Bayou in Grant 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 1919, making it 106 years old at the 2025 inventory.
- It carries about 40 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 30 of the 209 inventoried bridges in Grant Parish rated poor (14.4%); 30 (14.4%) are rated poor.
- 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 → (31.4664, -92.6115)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 5 | Fair condition |
| Superstructure | 5 | Fair condition |
| Substructure | 4 | Poor condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 148 ft |
| Location | 0.3 M. SE of La 492 |
| NBI structure number | 082231280923681 |
| Condition class | Poor |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Louisiana department of transportation.
Busiest bridges in Grant Parish
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US0167 over Big Creek | 1988 | 11,712 | Good |
| US0167 over Creek | 1957 | 11,712 | Fair |
| US0167 over Mosley Mill Creek | 1975 | 11,712 | Poor |
| US0167 over Bear Creek | 1975 | 11,712 | Poor |
| US0165 over La 1230 UP RR | 1956 | 7,084 | Poor |
| US0167 over Mosely Creek | 2010 | 7,084 | Good |
All bridges nearby: Grant Parish, LA bridge conditions · every bridge in Grant Parish · Louisiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.