Home › South Carolina › Lexington County › US 21 over Congaree River

US 21 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

US 21 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 superstructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1953, making it 72 years old at the 2025 inventory.
It carries about 28,000 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 girder and floorbeam
Length	about 1,463 ft
Location	1 Mi SW of Columbia
NBI structure number	000000000001965
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