Orangeburg County Bridge Report Card
Orangeburg County scores 65 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Orangeburg County, South Carolina
Orangeburg County has 274 bridges in the National Bridge Inventory, with 22 rated poor and 18 rated scour-critical. Its poor-condition share of 8.0% is above the 6.3% statewide average. Poor-condition bridges carry about 20,250 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Orangeburg County a Bridge Condition Exposure Score of 65/100 (D). The county has 274 bridges in the National Bridge Inventory, including 22 in poor condition and 18 rated scour-critical. Poor-condition bridges carry about 20,250 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 | 8.0% | 16.1 |
| Poor-condition traffic exposure | 25 | 1.6% of measured traffic | 1.2 |
| Scour-critical bridge share | 20 | 6.6% | 13.1 |
| Average age vs national baseline | 10 | 60 years vs 48 nationally | 4.8 |
| Traffic-data completeness | 5 | 1,231,350 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 | 8.0% |
| State Poor-Condition Share | 6.3% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 6.6% |
| Average Bridge Age | 60 years |
| Poor-Condition Traffic Exposure | 20,250 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Orangeburg County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Sc 453 over Four Hole Swamp | Poor condition + traffic exposure | Poor | 2,600 | 1975 |
| S-38-640 over Trib To Four Hole Swamp | Poor condition + traffic exposure | Poor | 50 | 1968 |
| US 176 over Target Creek | Poor condition + traffic exposure | Poor | 3,800 | 1950 |
| US 178 over Bull Swamp | Poor condition + traffic exposure | Poor | 3,600 | 1940 |
| Sc 70 over Roberts Swamp | Poor condition + traffic exposure | Poor | 3,100 | 1957 |
| Sc 39 over S. Edisto River Swamp | Poor condition + traffic exposure | Poor | 2,200 | 1940 |
| S-38-39 over Cooper Swamp | Poor condition + traffic exposure | Poor | 1,200 | 1940 |
| Sc 210 over Four Hole Swamp | Poor condition + traffic exposure | Poor | 850 | 1927 |
| S-38-191 over Roberts Swamp | Poor condition + traffic exposure | Poor | 350 | 1939 |
| S-38-200 over Bushy Branch | Poor condition + traffic exposure | Poor | 350 | 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.