I-20 WB over US 521
Kershaw County, South Carolina · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I-20 WB over US 521 in Kershaw County, South Carolina, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1972, making it 53 years old at the 2025 inventory.
- It carries about 22,100 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 100 of the 173 inventoried bridges in Kershaw County rated fair (57.8%); 7 (4.0%) 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 March 2024, 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 → (34.21706, -80.59279)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 295 ft |
| Location | 1.5 Mi S of Camden |
| NBI structure number | 000000000006125 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 2024 |
| 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 South Carolina department of transportation.
Busiest bridges in Kershaw County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-20 over Spears Creek | 1966 | 55,600 | Fair |
| I-20 over Kellers Creek | 1966 | 55,600 | Fair |
| I-20 over Gillies Ditch | 1969 | 44,200 | Fair |
| US 1 over RR Csxt | 2004 | 25,800 | Good |
| I-20 EB over Branch of Haigs Creek | 1966 | 25,000 | Fair |
| I-20 WB over Branch of Haigs Creek | 1966 | 25,000 | Fair |
All bridges nearby: Kershaw County, SC bridge conditions · every bridge in Kershaw County · South Carolina bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.