South Carolina Highway 28 (SC 28) is a primary state highway in the U.S. state of South Carolina. It consists of two segments of highway signed as east–west but physically traveling north–south from the Georgia state line near Mountain Rest to Beech Island. It is part of a continuous highway separated by a stretch through Augusta, Georgia. Route description SC 28 is part of a three-state highway 28, that totals from Tapoco, North Carolina to Beech Island, South Carolina. Both Georgia and South Carolina have two sections of Highway 28. Starting at the Russell Bridge over the Chattooga River, SC 28 starts off as a mountain rural highway, cutting through the Chattooga Ridge at Callas Gap (highest point on route). After passing Stumphouse Mountain, the curves end as it enters Walhalla. Once south of Walhalla, the road expands to four-lane (some sections divided), traveling straight to Seneca, then east around Clemson then south towards and around Anderson. Once south of Anderson, it switches into a two-lane rural road through Antreville, around Abbeville, and through McCormick. Along the banks of Lake Strom Thurmond, it eventually crosses over a non-dammed section of the Savannah River near Augusta, Georgia. SC 28 returns into the state, just southeast of Augusta as a four-lane highway for before ending in Beech Island at U.S. Route 278 (US 278) / SC 125. History Established as an original primary route in 1922, SC 28 went northwest from Allendale, through Ellenton, to Beech Island. In 1928, it was extended southeast, replacing SC 1 from Allendale to Yemassee, then replaced SC 30 to Beaufort. Seven years later, SC 28 was truncated in Yemassee, replaced by an extension of US 21 to Beaufort. In 1938, SC 28 was extended northwest, going through Georgia as Georgia State Route 28 to Abbeville (replacing SC 20); then from Abbeville to Anderson (replacing SC 18); and finally from Anderson to the Georgia state line along the Chattooga River (replacing SC 24). In 1940, SC 28 was extended southeast to Gardens Corner as new primary routing; however, eight years later the extension was dropped, truncated back in Yemassee. In 1951 or 1952, SC 28 between Beech Island and Allendale was cut off by the establishment of the Savannah River Site. In 1953, SC 28 was rerouted north around the Savannah River Site (replacing part of SC 781), then along new primary routing south to Barnwell, and