Home › South Carolina › Charleston County › Ramp Off I-526 EB over I-526 & S-56

Ramp Off I-526 EB over I-526 & S-56

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

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

Ramp Off I-526 EB over I-526 & S-56 in Charleston 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 6 (satisfactory condition) on the 0-9 scale.
It was built in 1991, making it 34 years old at the 2025 inventory.
It carries about 8,600 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 189 of the 339 inventoried bridges in Charleston County rated fair (55.8%); 9 (2.7%) 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	Continuous steel stringer or multi-beam girder
Length	about 1,511 ft
Location	Near Mount Pleasant
NBI structure number	000000000008420
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 RR NS Spur & Taylor St	1964	170,100	Fair
I-26 over Goose Creek	1960	109,600	Fair
I-26 over RR Csxt	1963	94,100	Poor
US 17 over RR Csxt & US 52 Bus	2005	94,100	Fair
US 17 over Marsh	2005	94,100	Good
US 17 over Cooper River Town Creek	2005	94,100	Good