Bridge conditions in Horry County, South Carolina

480 inventoried bridges · 24 rated poor · 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Horry County tracks close to typical: 24 of its 480 inventoried bridges (5.0%) are rated poor, against a national rate of about 7%.

24 of the 480 bridges in Horry County, South Carolina, are rated in poor condition (5.0%) in the 2025 National Bridge Inventory, as of August 20, 2026.
225 bridges (46.9%) are rated good and 231 (48.1%) fair.
The median Horry County bridge was built in 1994.
The busiest poor-rated bridge is US 501 Byp over U.S.701 (built 1958), carrying about 56,800 vehicles a day.

Good 46.9% · Fair 48.1% · Poor 5.0% of 480 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 501 Byp over U.S.701	1958	56,800	Poor
US 501 Byp over Waccamaw River	1958	56,800	Poor
US 501 over Crabtree Swamp	1948	38,600	Poor
US 501 over Chinners Swamp	1948	25,600	Poor
US 501 over Brunson Creek	1948	25,600	Poor
US 701 over Crabtree Swamp	1920	23,000	Poor
US 701 over Bear Swamp	1931	17,400	Poor
US 701 over Maple Swamp	1931	14,100	Poor
US 501 SB over Little Pee Dee River	1974	13,900	Poor
Sc 319 over Chinners Mill Br (no. 3)	1970	3,800	Poor
S-26-105 over Stanley Creek	1970	3,200	Poor
S-26-154 over Murrells Inlet Creek	1997	2,500	Poor
Sc 917 over Long Branch Swp (no. 2)	1948	2,100	Poor
Sc 905 over Lemon Branch	1940	1,950	Poor
S-26-569 over Br of Lousing Swp	1975	1,050	Poor
S-26-934 over Br of Hunting Swamp	1975	950	Poor
S-26-351 over Myrtle Swash	1966	750	Poor
S-26-668 over Br of Kingston Lake	1968	750	Poor
S-26-99 over Palmetto Swamp	1960	700	Poor
S-26-309 over Breakfast Swamp	1959	450	Poor
S-26-931 over Brown Swamp	1976	300	Poor
S-26-646 over Mitchell Swamp	1966	250	Poor
C-26-740 over White Oak Swamp	1991	250	Poor
S-26-308 over Prince Mill Swamp	1961	125	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
US 501 over Intercoastal Waterway	1963	63,800	Fair
US 501 Byp over U.S.701	1958	56,800	Poor
US 501 Byp over Waccamaw River	1958	56,800	Poor
S-26-1315 over Grissom Parkway Tunnel	2002	55,000	Good
S-26-1315 over Sc 31	2002	55,000	Good
S-26-1315 over L-6311	2002	55,000	Good
S-1315 over Icww	2002	55,000	Good
US 17 over Little Rv.s-236 & 1110	1971	48,800	Fair
US 17 over U.S. 501	1974	46,800	Fair
US 17 over Broadway Canal	1992	46,800	Good

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.