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S-12-299 over Mill Creek

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

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

S-12-299 over Mill Creek in Chester 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 1996, making it 29 years old at the 2025 inventory.
It carries about 125 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 68 of the 191 inventoried bridges in Chester County rated good (35.6%); 20 (10.5%) 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	Prestressed concrete stringer or multi-beam girder
Length	about 114 ft
Location	9MI NW Chester
NBI structure number	000000000008988
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-77 NB over Scl Railroad	1978	28,150	Fair
I-77 SB over Scl Railroad	1978	28,150	Fair
I-77 NB over S. Fork Fishing Ck	1979	28,150	Fair
I-77 Nbl over Fishing Creek	1979	28,150	Fair
I-77 SB over S. Fork Fishing Ck	1979	28,150	Fair
I-77 Sbl over Fishing Creek	1979	28,150	Fair