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South Carolina Highway 121 (SC 121) is a major state highway that runs north and south in the western part of the U.S. state of South Carolina. The road is actually part of a long multi-state route that also goes through Florida and Georgia. Some see it as a de facto auxiliary route from U.S. Route 21 in Rock Hill. Efforts to have the road upgraded to such status have failed however. ==Route description== South Carolina Highway 121 continues its concurrency with U.S. Route 25 from Augusta, Georgia into North Augusta, South Carolina. In the Schultz Hill section of North Augusta, US 25/SC 121 leaves the concurrency with US 1 and US 78, and heads north. Still within North Augusta, it has an interchange with Interstate 520 at Exit 22 and Interstate 20 in South Carolina(at Exit 5). In Trenton, US 25 turns left onto SC 19 and SC 121 becomes an independent route for the first time. From there it runs mainly through rural western South Carolina. Johnston is where the route serves as the northern terminus of SC 191, and later crosses SC 23. In Saluda, SC 121 is overlapped by U.S. Route 178/SC 39, then intersects U.S. Route 378. The overlap with US 178/SC 39 ends at Travis Road. Later it crosses a bridge over the Saluda River and is then overlapped with SC 34 until it reaches Newberry. Barely inside Newberry, the route becomes the terminus of SC 395 and then has a major intersection with U.S. Route 76. Further north it encounters a quarter-cloverleaf interchanges with Interstate 26(at Exit 72). North of Newberry, it encounters yet another concurrency with U.S. Route 176, which it follows straight north before curving to the west as it enters Whitmire, where the routes make a sharp turn to the east and encounters the beginning of a long concurrency with SC 72. After a bridge over the Enoree River, the concurrency with US 176 ends just east of Whitmire. SC 121/72 runs through Carlisle where it has another concurrency with SC 215, which ends east of the bridge over the Broad River, which contains a monument to an American Revolutionary battle known as the Battle of Fishdam Ford. In Chester SC 121/72 has another concurrency, this time with U.S. Route 321/SC 9. This concurrency runs southeast until US 321 branches off to the south at the southern terminus of US BUS 321. The routes continue to the east along SC 97, running beneath a railroad bridge, and then turning toward the north. SC 9 makes a right turn at Lancaster Avenue, which is the eastern terminus of SC BUS 9. SC 121/72/97 has an at-grade crossing with another railroad line leading to the city, and then SC 121/72 branches off to the right at Saluda Road (SC BUS 72), while SC 97 continues north. The concurrency with SC 72 finally ends at SC 901 in Rock Hill. Within the city, it joins briefly with SC 5, before merging with its final concurrency, U.S. Route 21. Traversing east of the downtown area, its journey ends at Cherry Road, where US 21 continues north towards Fort Mill, while also connecting with SC 322. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「South Carolina Highway 121」の詳細全文を読む スポンサード リンク
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