S-31-34 over Black River
Lee County, South Carolina · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- S-31-34 over Black River in Lee County, South Carolina, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1991, making it 34 years old at the 2025 inventory.
- It carries about 400 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 47 of the 91 inventoried bridges in Lee County rated fair (51.6%); 2 (2.2%) are rated poor.
- 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 → (34.14216, -80.22357)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 120 ft |
| Location | 5 Mi S of Bishopville |
| NBI structure number | 000000000008464 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the South Carolina department of transportation.
Busiest bridges in Lee County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-20 over Laws Branch | 1972 | 29,500 | Fair |
| I-20 over Mill Branch | 1972 | 29,500 | Fair |
| I-20 EB over Scape Ore Swamp | 1971 | 15,350 | Fair |
| I-20 EB over U.S. 15 | 1971 | 15,350 | Good |
| I-20 WB over Scape Ore Swamp | 1971 | 15,350 | Fair |
| I-20 WB over US 15 | 1971 | 15,350 | Good |
All bridges nearby: Lee County, SC bridge conditions · every bridge in Lee County · South Carolina bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.