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S-23-978 over Middle Tyger River

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

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

S-23-978 over Middle Tyger River in Greenville 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 substructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1968, making it 57 years old at the 2025 inventory.
It carries about 375 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 238 of the 636 inventoried bridges in Greenville County rated fair (37.4%); 47 (7.4%) 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	Prestressed concrete channel beam
Length	about 29 ft
Location	11.8 Mi N Greer
NBI structure number	000000000005300
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-85 over Muddy Ford Rd (s-580)	1960	140,900	Fair
I-85 over Rocky Creek	2022	140,900	Good
I-85 over Brushy Creek	1962	120,200	Fair
I-85 over Enoree River	2000	120,200	Fair
I-85 over U S 276	1960	118,000	Fair
I-85 over Laurel Creek	1960	113,800	Fair