Interstate 520 East

Interstate 520 east enters the state of South Carolina midway across the Savannah River bridge. A pair of palmetto trees and two welcome signs stand along the freeway as I-520 angles northward into North Augusta.

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Interstate 520 in South Carolina is named the Palmetto Parkway, after the state tree, the sabal palmetto.

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I-520 in South Carolina continues with east cardinal directions from Bobby Jones Expressway in Georgia.

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Exit numbers along Palmetto Parkway continue those from Bobby Jones Expressway in Georgia. U.S. 1-78-278 (Jefferson Davis Highway) meet I-520 at the first of four interchanges in South Carolina.

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U.S. 1 travels from east to west between U.S. 25 at Shultz Hill nearby and the city of Aiken. U.S. 78/278 overlap with U.S. 1 through the parclo interchange at Exit 17 but are not acknowledged on signage. U.S. 278 splits with U.S. 1/78 for Atomic Road south to Barnwell while U.S. 78 remains with U.S. 1 east into Downtown Aiken.

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U.S. 1-78-278 join U.S. 25 south into Downtown Augusta while U.S. 25/S.C. 121 head northwest into North Augusta. Phase one of the Palmetto Parkway, extending I-520 to U.S. 1-78-278, opened on June 22, 2004.

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Advancing from U.S. 1-78-278, Interstate 520 continues north over S.C. 125 (Atomic Road). This confirming marker was missing by Summer 2016 and has not been replaced.

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Phase 2 of the Palmetto Parkway extended I-520, 6.5 miles north to Interstate 20. A distance sign is posted five miles out from I-20 and two miles south of the diamond interchange with S.C. 126 (Belvedere-Clearwater Road).

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S.C. 126 (Belvedere-Clearwater Road) joins U.S. 1/278 and S.C. 421 (Poplar Street) in Clearwater with U.S. 25/S.C. 121 at Belvedere. A portion of the route was widened to coincide with I-520 construction.

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Transmission lines pass over Interstate 520 in this scene near Bradleyville. Paralleling the freeway to the west is the Palmetto Parkway Greenway, a multi-use path stretching 4.7 miles between S.C. 125 (Atomic Road) and Ascauga Lake Road.

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Exit 21 departs Interstate 520 (Palmetto Parkway) eastbound for S.C. 126 (Clearwater Road). Exit 22 follows in 1.5 miles with a connector road linking the freeway with parallel U.S. 25/S.C. 121 (Edgefield Road).

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Interstate 20 runs across northern reaches of North Augusta west to Martinez and Augusta, Georgia. Eastward the rural freeway continues 64 miles to Columbia.

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Despite Interstate 520 being rural between S.C. 126 and I-20, speed limits remain at just 60 miles per hour.

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Exit 22 consists of a folded diamond interchange with U.S. 25 Connector west to U.S. 25/S.C. 121 (Edgefield Road) north of Belvedere.

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U.S. 25 leads south back into North Augusta while continuing north from I-20 (Exit 5) to Edgefield. MSR 121 south coincides with U.S. 25 into Georgia. S.C. 121 north splits with U.S. 25 near Trenton for a route to Johnston and Saluda.

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Ascauga Lake Road passes over I-520 ahead of the three wye interchange with I-20. Single lane ramps connect to either direction of I-20.

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I-520 concludes as traffic partitions for I-20 west to Atlanta, Georgia and east to Columbia.

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Construction of Palmetto Parkway reconfigured the preexisting parclo interchange with U.S. 25/S.C. 121, separating the westbound ramp to I-20 from the off-ramp at Exit 5.

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