I 55 over Tangipahoa River
Pike County, Mississippi · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I 55 over Tangipahoa River in Pike 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 1960 and reconstructed in 2013, making it 65 years old at the 2025 inventory.
- It carries about 9,000 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 88 of the 211 inventoried bridges in Pike County rated fair (41.7%); 12 (5.7%) are rated poor.
- 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 → (31.12028, -90.48371)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete single box beam |
| Length | about 321 ft |
| Location | 0.6 Mi N SR 568 |
| NBI structure number | 11000550570084B |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Mississippi department of transportation.
Busiest bridges in Pike County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 55 over Minnehaha Creek | 1960 | 22,000 | Good |
| I 55 over Tangipahoa River Trib | 1960 | 18,000 | Good |
| I 55 over Tangipahoa River Relief | 1960 | 18,000 | Fair |
| US 98 over Cnic RR | 1940 | 18,000 | Fair |
| US 98 over Unnamed Stream | 1939 | 18,000 | Fair |
| I 55 over SR 570 | 1959 | 14,500 | Fair |
All bridges nearby: Pike County, MS bridge conditions · every bridge in Pike County · Mississippi bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.