Bridge conditions in Lancaster County, South Carolina
182 inventoried bridges · 17 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 182 bridges in Lancaster County: 52 rated good, 113 fair, and 17 poor.
- 17 of the 182 bridges in Lancaster County, South Carolina, are rated in poor condition (9.3%) in the 2025 National Bridge Inventory, as of .
- 52 bridges (28.6%) are rated good and 113 (62.1%) fair.
- The median Lancaster County bridge was built in 1968.
- The busiest poor-rated bridge is US 521 SB over RR Csxt (built 1929), carrying about 12,150 vehicles a day.
Good 28.6% · Fair 62.1% · Poor 9.3% of 182 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 |
|---|---|---|---|
| US 521 SB over RR Csxt | 1929 | 12,150 | Poor |
| Sc 200 over Camp Creek | 1938 | 6,600 | Poor |
| S-29-55 over Twelve Mile Creek | 1938 | 2,800 | Poor |
| S-29-26 over Horton Creek | 1961 | 1,450 | Poor |
| S-29-100 over Gills Creek | 1968 | 1,150 | Poor |
| S-29-166 over Camp Creek | 1955 | 1,100 | Poor |
| S-29-185 over Camp Creek | 1969 | 1,050 | Poor |
| S-29-274 over Gills Creek | 1966 | 850 | Poor |
| S-29-126 over Six Mile Creek | 1965 | 550 | Poor |
| S-29-47 over Baskins Creek | 1928 | 475 | Poor |
| S-29-285 over Br of Cane Creek | 1960 | 375 | Poor |
| S-29-123 over Flat Creek | 1938 | 300 | Poor |
| S-29-195 over Camp Creek | 1957 | 200 | Poor |
| S-29-765 over Hanging Rock Creek | 1958 | 200 | Poor |
| S-29-94 over Little Creek | 1969 | 150 | Poor |
| S-29-294 over Branch | 1940 | 125 | Poor |
| S-29-204 over Flat Creek | 1939 | 100 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 521 over Hannahs Creek | 1965 | 27,400 | Good |
| US 521 over U.S.521 | 1965 | 27,400 | Fair |
| US 521 over Camp Creek | 1952 | 25,700 | Fair |
| Sc 160 over Big Sugar Creek | 1999 | 19,000 | Good |
| Sc 5 over Catawba Rv & S.c.l. RR | 2013 | 18,900 | Good |
| US 521 NB over Gills Creek | 1965 | 13,700 | Fair |
| US 521 SB over Gills Creek | 1965 | 13,700 | Fair |
| US 521 NB over Waxhaw Creek | 1973 | 12,850 | Fair |
| US 521 NB over Stream | 1973 | 12,850 | Fair |
| US 521 over Stream | 1972 | 12,850 | 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.