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I-77 NB over Congaree River

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

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

I-77 NB over Congaree River in Lexington 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 6 (satisfactory condition) on the 0-9 scale.
It was built in 1985, making it 40 years old at the 2025 inventory.
It carries about 47,350 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 110 of the 230 inventoried bridges in Lexington County rated fair (47.8%); 10 (4.3%) 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 stringer or multi-beam girder
Length	about 1,308 ft
Location	5 Mi S Columbia
NBI structure number	000000000007913
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 Stoop Creek	1960	143,200	Good
I-26 over RR NS	1958	93,100	Fair
I-26 over Saluda River	1959	91,400	Fair
I-26 over Sc 302	1959	90,900	Fair
I-20 over RR Cn&l	1964	88,300	Fair
I-20 over Stoop Creek	1964	88,300	Good