SR 13 over SR 149
Simpson County, Mississippi · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 13 over SR 149 in Simpson 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 1960, making it 65 years old at the 2025 inventory.
- It carries about 4,800 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 125 of the 198 inventoried bridges in Simpson County rated good (63.1%); 9 (4.5%) 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 April 2023, on a 24-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 → (31.9665, -89.88472)
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 | Prestressed concrete stringer or multi-beam girder |
| Length | about 155 ft |
| Location | SR 13 over SR 149 |
| NBI structure number | 310001306409910 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2023 |
| 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 Simpson County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 49 over Sellers Creek | 1965 | 25,000 | Fair |
| US 49 over Gravel Pit Creek | 1965 | 25,000 | Fair |
| US 49 over Bear Creek | 1965 | 25,000 | Good |
| US 49 over Unnamed Stream | 1961 | 21,000 | Fair |
| US 49 over SR 149 & Cnic RR | 1965 | 12,500 | Good |
| US 49 over SR 149 & Cnic RR | 1965 | 12,500 | Good |
All bridges nearby: Simpson County, MS bridge conditions · every bridge in Simpson County · Mississippi bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.