Lamkin Road over 509 over Lower Auxi Chan
Humphreys County, Mississippi · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Lamkin Road over 509 over Lower Auxi Chan in Humphreys County, Mississippi, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1959, making it 66 years old at the 2025 inventory.
- It carries about 110 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 38 of the 93 inventoried bridges in Humphreys County rated fair (40.9%); 4 (4.3%) 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 November 2023, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (33.04604, -90.47761)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 460 ft |
| Location | Sec 23 T14N R 3W B |
| NBI structure number | SA2700000000022 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | November 2023 |
| 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 Mississippi department of transportation.
Busiest bridges in Humphreys County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 49W over French Bayou | 2004 | 6,200 | Good |
| US 49W over Lower Auxiliary Channel | 2004 | 3,100 | Fair |
| US 49W over Lower Auxiliary Channel | 2004 | 3,100 | Good |
| US 49W over Atchafalaya Bayou | 2004 | 3,100 | Fair |
| US 49W over Atchafalaya Bayou | 2004 | 3,100 | Good |
| US 49W over Five Mile Lake | 2004 | 3,050 | Fair |
All bridges nearby: Humphreys County, MS bridge conditions · every bridge in Humphreys County · Mississippi bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.