SR 585 over Unnamed Stream
Walthall County, Mississippi · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 585 over Unnamed Stream in Walthall County, Mississippi, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1974, making it 51 years old at the 2025 inventory.
- It carries about 410 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 27 of the 157 inventoried bridges in Walthall County rated fair (17.2%); 2 (1.3%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It was rated good in the 2024 inventory and is now fair (substructure 7 to 6).
- Its most recent inspection on record is dated August 2024, 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 → (31.19439, -90.07074)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 7 | 6 | Satisfactory condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 160 ft |
| Location | 3.8 Mi N US 98 |
| NBI structure number | 310058507400380 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Mississippi department of transportation.
Busiest bridges in Walthall County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 98 over Sweetwater Creek | 1938 | 8,100 | Good |
| US 98 over Sweetwater Creek | 1938 | 8,100 | Good |
| US 98 over Unnamed Stream | 1938 | 7,700 | Good |
| SR 48 over Magee Creek | 1939 | 6,300 | Fair |
| SR 27 over Unnamed Stream | 1948 | 5,700 | Good |
| SR 27 over Unnamed Stream | 1976 | 4,800 | Good |
All bridges nearby: Walthall County, MS bridge conditions · every bridge in Walthall County · Mississippi bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.