Bridge conditions in Darlington County, South Carolina
173 inventoried bridges · 11 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Darlington County tracks close to typical: 11 of its 173 inventoried bridges (6.4%) are rated poor, against a national rate of about 7%.
- 11 of the 173 bridges in Darlington County, South Carolina, are rated in poor condition (6.4%) in the 2025 National Bridge Inventory, as of .
- 55 bridges (31.8%) are rated good and 107 (61.8%) fair.
- The median Darlington County bridge was built in 1972.
- The busiest poor-rated bridge is S-16-18 over Black Creek (built 1969), carrying about 3,700 vehicles a day.
Good 31.8% · Fair 61.8% · Poor 6.4% of 173 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| S-16-18 over Black Creek | 1969 | 3,700 | Poor |
| US 15 over Little Seed Tick Creek | 1931 | 3,000 | Poor |
| US 15 over Big Seed Tick Creek | 1931 | 3,000 | Poor |
| S-16-1040 over Black Creek | 1980 | 2,500 | Poor |
| S-16-185 over Swift Creek | 1978 | 1,000 | Poor |
| S-16-13 over Swift Creek | 1979 | 900 | Poor |
| S-16-19 over Boggy Swamp | 1956 | 450 | Poor |
| S-16-41 over Flat Creek | 1965 | 375 | Poor |
| S-16-290 over Boggy Gully Swamp | 1980 | 275 | Poor |
| S-16-697 over Newman & Sparrow Swamp | 1966 | 175 | Poor |
| S-16-786 over Bellyche Swamp | 1985 | 125 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-20 over Jacks Branch | 1974 | 30,400 | Fair |
| I-95 NB over Black Creek | 2004 | 27,150 | Good |
| I-95 SB over Black Creek | 2004 | 27,150 | Good |
| US 52 over Indian Creek | 1972 | 24,000 | Fair |
| US 52 over High Hill Creek | 1924 | 19,800 | Fair |
| US 52 over High Hill Creek | 1924 | 19,800 | Fair |
| US 15 Bus over Prestwood Lake | 1945 | 17,100 | Fair |
| I-20 EB over Jefferies Creek | 1973 | 15,750 | Fair |
| I-20 WB over Jefferies Creek | 1973 | 15,750 | Fair |
| I-20 EB over Lake Swamp | 1973 | 15,200 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of South Carolina: South Carolina bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.