Home › South Carolina › Allendale County › S-3-66 over Lower Three Run Creek

S-3-66 over Lower Three Run Creek

Allendale County, South Carolina · rated Poor in the 2025 National Bridge Inventory

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

S-3-66 over Lower Three Run Creek in Allendale County, South Carolina, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 3 (serious condition) on the 0-9 scale.
It was built in 1950, making it 75 years old at the 2025 inventory.
It carries about 125 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 9 of the 69 inventoried bridges in Allendale County rated poor (13.0%); 9 (13.0%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings

Source: FHWA National Bridge Inventory, 2025 data as reported by the South Carolina department of transportation.

Bridge	Built	Vehicles/day	Condition
US 278 over Duck Creek	1922	6,200	Fair
US 278 over Southern Railroad	1961	3,500	Fair
US 301 over Salkehatchie River Swamp	1959	3,000	Fair
US 301 over Salkehatchie River Swamp	1959	3,000	Fair
US 301 over Salkehatchie River	1937	3,000	Fair
US 278 over Log Creek	1945	2,900	Fair