Robb Street over I 55
Pike County, Mississippi · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Robb Street over I 55 in Pike 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 1959, making it 66 years old at the 2025 inventory.
- It carries about 900 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 111 of the 211 inventoried bridges in Pike County rated good (52.6%); 12 (5.7%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated December 2024, on a 12-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 → (31.28419, -90.47915)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Continuous concrete single box beam |
| Length | about 227 ft |
| Location | 1.7 Mi N SR 570 |
| NBI structure number | 510005505701970 |
| Condition class | Good |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | December 2024 |
| Inspection interval (item 91) | 12 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 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.