I-20 WB over Sc 340

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

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

I-20 WB over Sc 340 in Darlington 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 6 (satisfactory condition) on the 0-9 scale.
It was built in 1973, making it 52 years old at the 2025 inventory.
It carries about 15,200 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 107 of the 173 inventoried bridges in Darlington County rated fair (61.8%); 11 (6.4%) 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	Steel stringer or multi-beam girder
Length	about 213 ft
Location	9MI W of Florence
NBI structure number	000000000006264
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-20 over Jacks Branch	1974	30,400	Fair
I-95 NB over Black Creek	2004	27,150	Good
I-95 SB over Black Creek	2004	27,150	Good
US 52 over Indian Creek	1972	24,000	Fair
US 52 over High Hill Creek	1924	19,800	Fair
US 52 over High Hill Creek	1924	19,800	Fair