US 15 over Beaver Dam Creek
Marlboro County, South Carolina · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 15 over Beaver Dam Creek in Marlboro County, South Carolina, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1939, making it 86 years old at the 2025 inventory.
- It carries about 7,600 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.
- 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 May 2023, 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 → (34.65871, -79.56138)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 31 ft |
| Location | Town of Mccoll |
| NBI structure number | 000000000000949 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | May 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
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 Panther Creek | 1925 | 7,600 | Poor |
| Sc 38 over Three Creeks | 1994 | 7,500 | Fair |
| US 1 SB over Pee Dee Overflow (no. 1) | 1937 | 7,400 | 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.