US 301 over Black River (no. 2)
Clarendon County, South Carolina · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 301 over Black River (no. 2) in Clarendon County, South Carolina, 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 2017, making it 8 years old at the 2025 inventory.
- It carries about 1,700 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 31 of the 170 inventoried bridges in Clarendon County rated good (18.2%); 7 (4.1%) 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 September 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 → (33.80919, -80.11395)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 422 ft |
| Location | 8MI N of Manning |
| NBI structure number | 000000000000644 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the South Carolina department of transportation.
Busiest bridges in Clarendon County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-95 over Tawcaw Creek | 1967 | 35,400 | Fair |
| I-95 NB over Lake Marion | 1968 | 19,800 | Fair |
| I-95 NB over Lake Marion Relief | 1968 | 19,800 | Fair |
| I-95 NB over US 15 | 1968 | 19,800 | Fair |
| I-95 SB over Lake Marion | 1968 | 19,800 | Fair |
| I-95 SB over Lake Marion Relief | 1968 | 19,800 | Fair |
All bridges nearby: Clarendon County, SC bridge conditions · every bridge in Clarendon County · South Carolina bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.