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US 521 over Trib to Wateree River

Kershaw County, South Carolina · rated Fair in the 2025 National Bridge Inventory

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

US 521 over Trib to Wateree River in Kershaw County, South Carolina, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1959, making it 66 years old at the 2025 inventory.
It carries about 8,500 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 100 of the 173 inventoried bridges in Kershaw County rated fair (57.8%); 7 (4.0%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings

Component	Rating (2025)	FHWA scale meaning
Culvert	6	Satisfactory condition

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

Bridge	Built	Vehicles/day	Condition
I-20 over Spears Creek	1966	55,600	Fair
I-20 over Kellers Creek	1966	55,600	Fair
I-20 over Gillies Ditch	1969	44,200	Fair
US 1 over RR Csxt	2004	25,800	Good
I-20 EB over Branch of Haigs Creek	1966	25,000	Fair
I-20 WB over Branch of Haigs Creek	1966	25,000	Fair