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S-4-280 over Three & Twenty Creek

Anderson County, South Carolina · rated Good in the 2025 National Bridge Inventory

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

S-4-280 over Three & Twenty Creek in Anderson County, South Carolina, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
It was built in 2016, making it 9 years old at the 2025 inventory.
It carries about 1,550 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 129 of the 462 inventoried bridges in Anderson County rated good (27.9%); 19 (4.1%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings

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

Bridge	Built	Vehicles/day	Condition
I-85 over Big Beaver Dam Creek	1963	70,400	Fair
I-85 over County Road Under I-85	1963	70,200	Fair
I-85 over Six & Twenty Creek	2002	63,800	Fair
I-85 NB over Hurricane Creek	1962	54,300	Fair
I-85 NB over Steel Creek	1962	50,300	Fair
I-85 NB over Little Beaverdam Creek	1961	45,900	Fair