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US 378 over Lynches River

Florence County, South Carolina · rated Good in the 2025 National Bridge Inventory

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

US 378 over Lynches River in Florence County, South Carolina, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 2017, making it 8 years old at the 2025 inventory.
It carries about 5,800 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 92 of the 275 inventoried bridges in Florence County rated good (33.5%); 10 (3.6%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Continuous prestressed concrete stringer or multi-beam girder
Length	about 1,200 ft
Location	6MI NE Lake City
NBI structure number	000000000001371
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I-95 over US 52&s-21-498&rr Csxt	1966	57,700	Fair
I-95 SB over I-20 EB	1967	57,700	Fair
I-95 over S-21-26	1966	54,300	Fair
US 52 over Middle Swamp	1927	35,600	Fair
US 52 over Middle Swamp	1927	35,600	Fair
I-95 SB over S-21-13	1966	28,850	Fair