US 521 over Turkey Creek
Sumter County, South Carolina · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 521 over Turkey Creek in Sumter 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 2007, making it 18 years old at the 2025 inventory.
- It carries about 10,400 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 82 of the 166 inventoried bridges in Sumter County rated fair (49.4%); 17 (10.2%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It was rated good in the 2024 inventory and is now fair (substructure 7 to 6).
- Its most recent inspection on record is dated June 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 → (33.87463, -80.33435)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 100 ft |
| Location | 2 Mi S of Sumter |
| NBI structure number | 000000000008497 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 2024 |
| 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 Sumter County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-95 over Douglas Swamp | 1967 | 33,700 | Fair |
| I-95 over Hope Swamp | 1967 | 33,200 | Poor |
| I-95 over Pudding Swamp | 1967 | 33,200 | Fair |
| US 76 over Green Swamp | 1941 | 30,400 | Fair |
| US 76/US 378 over Long Branch | 1941 | 26,400 | Fair |
| US 521 over Shot Pouch Branch | 1977 | 25,200 | Fair |
All bridges nearby: Sumter County, SC bridge conditions · every bridge in Sumter County · South Carolina bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.