SR 366 over Casey Creek
Prentiss County, Mississippi · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 366 over Casey Creek in Prentiss County, Mississippi, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1993, making it 32 years old at the 2025 inventory.
- It carries about 560 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 144 of the 205 inventoried bridges in Prentiss County rated good (70.2%); 7 (3.4%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (good), but component ratings moved: deck 8 to 7, superstructure 8 to 7, substructure 8 to 7.
- Its most recent inspection on record is dated February 2024, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (34.496, -88.50201)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 7 | Good condition |
| Superstructure | 8 | 7 | Good condition |
| Substructure | 8 | 7 | Good condition |
Bridge details
| Structure | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 149 ft |
| Location | 6.6 Mi E SR 370 |
| NBI structure number | 310036605900660 |
| Condition class | Good |
| 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 Mississippi department of transportation.
Busiest bridges in Prentiss County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 145 over Stream | 1989 | 11,000 | Good |
| US 45 over Town Creek | 1993 | 8,500 | Good |
| US 45 over Town Creek | 1993 | 8,500 | Good |
| US 45 over Twentymile Creek | 1993 | 7,500 | Good |
| US 45 over Twentymile Creek | 1993 | 7,500 | Good |
| US 45 over Wolf Creek | 1993 | 7,500 | Good |
All bridges nearby: Prentiss County, MS bridge conditions · every bridge in Prentiss County · Mississippi bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.