Bridge conditions in Aiken County, South Carolina
198 inventoried bridges · 20 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
About one in 10 bridges in Aiken County is rated in poor condition: 20 of 198 on the federal inventory, one of the higher shares in South Carolina.
- 20 of the 198 bridges in Aiken County, South Carolina, are rated in poor condition (10.1%) in the 2025 National Bridge Inventory, as of .
- 64 bridges (32.3%) are rated good and 114 (57.6%) fair.
- The median Aiken County bridge was built in 1973.
- The busiest poor-rated bridge is I-20 WB over S.c. 19 (built 1968), carrying about 18,700 vehicles a day.
Good 32.3% · Fair 57.6% · Poor 10.1% of 198 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 |
|---|---|---|---|
| I-20 WB over S.c. 19 | 1968 | 18,700 | Poor |
| Sc 421 over Sou. Railroad | 1956 | 9,000 | Poor |
| Sc 421 over Little Horse Creek | 1926 | 9,000 | Poor |
| Sc 421 over Horse Creek | 1957 | 9,000 | Poor |
| US 278 & Sc 125 over Sou. Railroad | 1951 | 8,100 | Poor |
| US 278 over Horse Creek | 1951 | 8,100 | Poor |
| US 278/SC 125 over U S 1 | 1952 | 8,100 | Poor |
| Sc 125 Sbl over Hollow Creek | 1951 | 7,050 | Poor |
| Sc 421 over Stream | 1927 | 5,700 | Poor |
| S-2-145 over Trib to Horse CR. | 1954 | 1,750 | Poor |
| S-2-809 over Big Horse Creek | 1950 | 1,650 | Poor |
| S-2-166 over Norfolk Southern | 1990 | 950 | Poor |
| Sc 391 over Chinquapin Creek | 1924 | 900 | Poor |
| S-2-22 over South Edisto River #1 | 1953 | 550 | Poor |
| S-2-357 over North Edisto River 1/2 L | 1954 | 500 | Poor |
| S-2-14 over Dean Creek | 1985 | 350 | Poor |
| S-2-1020 over Shaws Creek | 1970 | 300 | Poor |
| S-2-180 over Norfolk Southern | 1992 | 300 | Poor |
| C-2-210 over N Fork Edisto River | 1953 | 125 | Poor |
| S-2-1139 over Unnamed Stream | 1967 | 25 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-20 over Savannah River | 2021 | 64,300 | Good |
| I-20 over Fox Creek | 1966 | 50,200 | Fair |
| I-20 over High Tower Branch | 1966 | 44,500 | Fair |
| I-20 over Horse Creek | 1966 | 44,500 | Fair |
| US 25 over I-20 | 2009 | 37,300 | Good |
| US 1 over Southern RR (no 1) | 1952 | 27,000 | Fair |
| US 1 over U S 1 Con Interchange | 1960 | 27,000 | Good |
| US 1 over L-4772 | 1960 | 27,000 | Fair |
| Ga SR 10/US 1 over CR2493 & Savannah River | 1960 | 27,000 | Good |
| US 1 over Horse Creek | 1950 | 26,500 | 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.