U.S. Route 123 (US 123) is a spur of US 23 in the U.S. states of Georgia and South Carolina. The U.S. Highway runs from US 23, US 441, SR 15 and SR 365 near Clarkesville, Georgia, north and east to Interstate 385 Business (I-385 Business) in Greenville, South Carolina. US 123 parallels I-85 to the north as it connects the Northeast Georgia cities of Clarkesville and Toccoa with the western Upstate South Carolina communities of Westminster, Seneca, Clemson, Easley, and Greenville. Route description US 123 has a length of in Georgia and in South Carolina. The U.S. Highway runs concurrently with SR 365 for its entire length in Georgia. US 123 is part of the National Highway System from its southern terminus to SR 17 and SR 184 near Toccoa and from US 76 and SC 28 in Clemson to SC 183 in Greenville. Clarkesville to Seneca US 123 begins at a partial interchange with US 23, US 441, SR 15 and SR 365 east of Clarkesville. The interchange provides access between US 123 and those highways in the direction of Cornelia, Gainesville, and Atlanta. Access to northbound US 23, US 441, and SR 15 is provided via SR 17 (Toccoa Highway), which US 123 meets at its next intersection and with which the highway begins to run concurrently. US 123 and SR 17 head east along a four-lane divided highway through Chattahoochee National Forest. The highways cross the Habersham–Stephens county line and pass over Norfolk Southern Railway's Greenville District while passing along the north side of Currahee Mountain. At their intersection with SR 184 (Dicks Hill Parkway), SR 17 continues southeast along the divided highway toward Lavonia while US 123 turns north and joins SR 184 on Curahee Street, which forms the border of the national forest until the highways reach the city limits of Toccoa. US 123 and SR 184 gain a center turn lane and cross a Norfolk Southern rail line as they approach the downtown area. In the center of town, the highway begins to parallel the Greenville District rail line and intersects Broad Street, which carries SR 63 and SR 106 south of the intersection and SR 184 to the north. US 123 passes the Toccoa Amtrak station and intersects SR 17 Alternate (Big A Road), where the center turn lane ends. The highway passes Toccoa Airport and veers away from the railroad on