US 61 over Porters Bayou
Bolivar County, Mississippi · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 61 over Porters Bayou in Bolivar County, Mississippi, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1980, making it 45 years old at the 2025 inventory.
- It carries about 10,000 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 175 of the 271 inventoried bridges in Bolivar County rated fair (64.6%); 28 (10.3%) 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 January 2025, 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 → (33.6013, -90.76535)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 33 ft |
| Location | at Jct US61 SR448 |
| NBI structure number | 210006100621300 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | January 2025 |
| 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 Bolivar County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 61 over Jones Bayou | 1980 | 11,000 | Fair |
| US 61 over Silver Bayou | 1980 | 10,000 | Fair |
| US 61 over Drainage Canal | 2000 | 9,700 | Fair |
| SR 8 over Creek | 1940 | 9,500 | Fair |
| SR 8 over Lead Bayou | 1940 | 9,500 | Fair |
| US 61 over Jones Bayou | 2000 | 7,900 | Fair |
All bridges nearby: Bolivar County, MS bridge conditions · every bridge in Bolivar County · Mississippi bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.