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S-4 WB over Seneca River

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

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

S-4 WB over Seneca River in Oconee 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 2004, making it 21 years old at the 2025 inventory.
It carries about 6,200 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 68 of the 215 inventoried bridges in Oconee County rated good (31.6%); 27 (12.6%) 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


Structure	Continuous prestressed concrete stringer or multi-beam girder
Length	about 700 ft
Location	1.0 Mi W of Clemson
NBI structure number	000000000009765
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I-85 NB over Hartwell Reservoir	1961	25,400	Fair
I-85 SB over Hartwell Reservoir	1961	25,400	Fair
I-85 NB over Fairplay Creek	1961	23,650	Fair
I-85 SB over Fairplay Creek	1961	23,650	Fair
US 76 over Seneca Creek	1958	23,000	Fair
Sc 28 over Richland Creek	1961	16,300	Good