Calhoun County Bridge Report Card
Calhoun County scores 85 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Calhoun County, South Carolina
Calhoun County has 61 bridges in the National Bridge Inventory, with 2 rated poor and 0 rated scour-critical. Its poor-condition share of 3.3% is at or below the 6.3% statewide average. Poor-condition bridges carry about 4,100 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Calhoun County a Bridge Condition Exposure Score of 85/100 (B). The county has 61 bridges in the National Bridge Inventory, including 2 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 4,100 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 | 3.3% | 6.6 |
| Poor-condition traffic exposure | 25 | 1.3% of measured traffic | 0.9 |
| Scour-critical bridge share | 20 | 0.0% | 0.0 |
| Average age vs national baseline | 10 | 67 years vs 48 nationally | 7.6 |
| Traffic-data completeness | 5 | 325,375 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 | 3.3% |
| State Poor-Condition Share | 6.3% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.0% |
| Average Bridge Age | 67 years |
| Poor-Condition Traffic Exposure | 4,100 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Calhoun County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| S-9-22 over Caw Caw Creek | Poor condition + traffic exposure | Poor | 3,300 | 1935 |
| S-9-24 over Bates Mill Creek | Poor condition + traffic exposure | Poor | 800 | 1930 |
| I-26 over Savany Hunt Creek | High traffic | Fair | 64,600 | 1960 |
| I-26 over Sandy Run Creek | High traffic | Fair | 62,000 | 1960 |
| I-26 over Murph Mill Creek | High traffic | Fair | 61,200 | 1960 |
| I-26 over Burke Creek | High traffic | Fair | 58,800 | 1960 |
| US 601 over Antley Spring Creek | High traffic | Good | 5,700 | 1930 |
| US 21 over Murph Mill Creek | High traffic | Fair | 5,000 | 1940 |
| US 21 over Savany Hunt Creek | High traffic | Fair | 4,900 | 1965 |
| Sc 6 over Sou.r/r-in St.matthews- | High traffic | Fair | 4,600 | 1953 |
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.