Aiken County Bridge Report Card
Aiken County scores 65 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Aiken County, South Carolina
Aiken County has 198 bridges in the National Bridge Inventory, with 20 rated poor and 10 rated scour-critical. Its poor-condition share of 10.1% is above the 6.3% statewide average. Poor-condition bridges carry about 90,150 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Aiken County a Bridge Condition Exposure Score of 65/100 (D). The county has 198 bridges in the National Bridge Inventory, including 20 in poor condition and 10 rated scour-critical. Poor-condition bridges carry about 90,150 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.
How the Score Breaks Down
| Factor | Weight | County Value | Penalty |
|---|---|---|---|
| Poor-condition bridge share | 40 | 10.1% | 20.2 |
| Poor-condition traffic exposure | 25 | 5.9% of measured traffic | 4.4 |
| Scour-critical bridge share | 20 | 5.1% | 10.1 |
| Average age vs national baseline | 10 | 48 years vs 48 nationally | 0.1 |
| Traffic-data completeness | 5 | 1,537,750 measured daily crossings | 0.0 |
Score = 100 minus weighted penalties. The score is a comparative research signal, not an official safety rating. Read the full methodology.
County Comparisons
| County Poor-Condition Share | 10.1% |
| State Poor-Condition Share | 6.3% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 5.1% |
| Average Bridge Age | 48 years |
| Poor-Condition Traffic Exposure | 90,150 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Aiken County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| I-20 WB over S.c. 19 | Poor condition + traffic exposure | Poor | 18,700 | 1968 |
| Sc 421 over Little Horse Creek | Poor condition + traffic exposure | Poor | 9,000 | 1926 |
| Sc 421 over Sou. Railroad | Poor condition + traffic exposure | Poor | 9,000 | 1956 |
| Sc 421 over Horse Creek | Poor condition + traffic exposure | Poor | 9,000 | 1957 |
| US 278 & Sc 125 over Sou. Railroad | Poor condition + traffic exposure | Poor | 8,100 | 1951 |
| US 278 over Horse Creek | Poor condition + traffic exposure | Poor | 8,100 | 1951 |
| US 278/sc 125 over U S 1 | Poor condition + traffic exposure | Poor | 8,100 | 1952 |
| Sc 125 Sbl over Hollow Creek | Poor condition + traffic exposure | Poor | 7,050 | 1951 |
| Sc 421 over Stream | Poor condition + traffic exposure | Poor | 5,700 | 1927 |
| S-2-145 over Trib To Horse Cr. | Poor condition + traffic exposure | Poor | 1,750 | 1954 |
Important safety note
Poor condition does not mean a bridge is unsafe. It means at least one major component has significant deterioration and the bridge is a priority for maintenance, repair, or replacement. Bridges judged unsafe are closed or restricted by transportation agencies.