SR 178 over US 45
Lee County, Mississippi · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 178 over US 45 in Lee 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 1975, making it 50 years old at the 2025 inventory.
- It carries about 3,900 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 121 of the 389 inventoried bridges in Lee County rated fair (31.1%); 18 (4.6%) 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 (deck 7 to 6, superstructure 7 to 6).
- Its most recent inspection on record is dated December 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 → (34.27455, -88.7069)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 6 | Satisfactory condition |
| Superstructure | 7 | 6 | Satisfactory condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous concrete single box beam |
| Length | about 226 ft |
| Location | SR178 over US 45 |
| NBI structure number | 31001780410884B |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | December 2024 |
| 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 Lee County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 45 over Old Town Creek Relief | 1983 | 37,000 | Good |
| I 22 over Ditch | 1982 | 34,000 | Good |
| I 22 over Boguefala Creek | 1982 | 34,000 | Good |
| I 22 over Ditch | 1983 | 33,000 | Good |
| I 22 over West Tulip Creek | 1983 | 31,000 | Good |
| I 22 over Middle Tulip Creek | 1983 | 31,000 | Good |
All bridges nearby: Lee County, MS bridge conditions · every bridge in Lee County · Mississippi bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.