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S-137 over Calabash Branch

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

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

S-137 over Calabash Branch in McCormick 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 1960, making it 65 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 38 of the 68 inventoried bridges in McCormick County rated fair (55.9%); 3 (4.4%) 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	Timber stringer or multi-beam girder
Length	about 20 ft
Location	8.5 Mi NE of Mccormick
NBI structure number	000000000010193
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Sc 28 over Savannah River	1929	4,600	Fair
Sc 28 over CSX Rail Road	1987	4,200	Good
US 221 over Rocky Creek	1941	3,300	Fair
US 221 over Simmons Branch	1942	3,300	Fair
US 378 over Little River	2017	2,700	Good
US 378/GA SR 43 over Savannah River	2016	2,700	Good