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I-526 over Cooper River

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

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

I-526 over Cooper River in Berkeley 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 deck, rated 5 (fair condition) on the 0-9 scale.
It was built in 1992, making it 33 years old at the 2025 inventory.
It carries about 76,300 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 130 of the 217 inventoried bridges in Berkeley County rated fair (59.9%); 8 (3.7%) 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


Structure	Continuous steel through truss
Length	about 16,450 ft
Location	In N. Charleston
NBI structure number	000000000008516
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I-26 over Saw Mill Branch	1960	93,600	Fair
US 17 Alt over I-26	2003	59,300	Good
I-26 over Timothy Creek	1960	52,800	Fair
I-26 EB over Timothy Creek	1960	52,800	Fair
US 17 Alt over Sawmill Creek	1936	44,000	Good
US 52 over Canter Hill Swamp	1971	42,000	Fair