US 78 over SR 305
DeSoto County, Mississippi · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 78 over SR 305 in DeSoto County, Mississippi, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1967, making it 58 years old at the 2025 inventory.
- It carries about 17,000 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 108 of the 266 inventoried bridges in DeSoto County rated fair (40.6%); 6 (2.3%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated April 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 → (34.94573, -89.83096)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 272 ft |
| Location | US 78 over SR 305 |
| NBI structure number | 21000780170043B |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Mississippi department of transportation.
Busiest bridges in DeSoto County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 55 over Rocky Creek | 1958 | 89,000 | Fair |
| I 55 over State Line Road | 2007 | 76,000 | Good |
| I 55 over Rascoe Road | 2007 | 44,500 | Good |
| I 55 over Rascoe Road | 2007 | 44,500 | Good |
| Airways Blvd over Rocky Creek | 1983 | 40,000 | Fair |
| SR 302 over Stream | 1994 | 38,000 | Good |
All bridges nearby: DeSoto County, MS bridge conditions · every bridge in DeSoto County · Mississippi bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.