Sawmill Road over Porter Bayou
Bolivar County, Mississippi · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Sawmill Road over Porter Bayou in Bolivar County, Mississippi, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1994, making it 31 years old at the 2025 inventory.
- It carries about 50 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 28 of the 271 inventoried bridges in Bolivar County rated poor (10.3%); 28 (10.3%) 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 March 2023, on a 24-month routine inspection cycle.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (33.6163, -90.7202)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 4 | 4 | Poor condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 149 ft |
| Location | Sec 33 T21N R 5W |
| NBI structure number | SA0600000000031 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | March 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | U: unknown foundation, not evaluated for scour |
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 Porters Bayou | 1980 | 10,000 | 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 |
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.