S-35-18 over Three Creeks
Marlboro County, South Carolina · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- S-35-18 over Three Creeks in Marlboro County, South Carolina, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1964 and reconstructed in 1992, making it 61 years old at the 2025 inventory.
- It carries about 325 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 55 of the 97 inventoried bridges in Marlboro County rated fair (56.7%); 7 (7.2%) 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 → (34.47591, -79.66984)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 5 | Fair condition |
| Superstructure | 5 | Fair condition |
| Substructure | 5 | Fair condition |
Bridge details
| Structure | Concrete slab |
| Length | about 165 ft |
| Location | 3 Mi S Blenheim |
| NBI structure number | 000000000004376 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the South Carolina department of transportation.
Busiest bridges in Marlboro County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Sc 9 Bus over Crooked Creek | 1921 | 10,100 | Poor |
| Sc 9 over Phillis Creek | 1932 | 8,300 | Poor |
| Sc 9 over Crooked Creek | 2010 | 7,900 | Good |
| US 15 over Beaver Dam Creek | 1939 | 7,600 | Fair |
| US 15 over Panther Creek | 1925 | 7,600 | Poor |
| Sc 38 over Three Creeks | 1994 | 7,500 | Fair |
All bridges nearby: Marlboro County, SC bridge conditions · every bridge in Marlboro County · South Carolina bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.