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S-9-72 over Halfway Swamp

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

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

S-9-72 over Halfway Swamp in Calhoun 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 deck, rated 5 (fair condition) on the 0-9 scale.
It was built in 1979, making it 46 years old at the 2025 inventory.
It carries about 75 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 53 of the 61 inventoried bridges in Calhoun County rated fair (86.9%); 2 (3.3%) 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	Prestressed concrete channel beam
Length	about 120 ft
Location	10 Mi SW St Mathews
NBI structure number	000000000007203
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 Savany Hunt Creek	1960	64,600	Fair
I-26 over Sandy Run Creek	1960	62,000	Fair
I-26 over Murph Mill Creek	1960	61,200	Fair
I-26 over Burke Creek	1960	58,800	Fair
US 601 over Antley Spring Creek	1930	5,700	Good
US 21 over Murph Mill Creek	1940	5,000	Fair