U.S. Route 15 (US 15) is a -long United States highway, designated along South Carolina, North Carolina, Virginia, Maryland, Pennsylvania, and New York. The route is signed north–south, from U.S. Route 17 Alternate in Walterboro, South Carolina to NY 17 in Corning, New York. US 15 is one of the original United States Highways from 1926. Route description |- |SC |158.58 |255.21 |- |NC |158.13 |254.48 |- |VA |229.73 |369.71 |- |MD |37.92 |61.02 |- |PA |194.89 |313.64 |- |NY |12.46 |20.05 |- |Total |791.71 |1,274.13 |} South Carolina Starting at ALT US 17 in Walterboro US 15 goes east, running parallel to I-95 and across I-26. Then it turns north and crosses I-95. Just before the town of Santee US 15 converges with US 301. In Santee, the two highways merge with I-95 at exit 98 and all three cross Lake Marion. At exit 102, US 15/301 split off from Interstate 95 and go into the town of Summerton. US 15 then separates from US 301 and heads mainly north to city of Sumter. From there it continues north, crosses I-20, goes through the cities of Bishopville and Hartsville to the town of Society Hill. It is here that US 401 joins US 15 and both go to the North Carolina border. North Carolina US 15-401 continues to Laurinburg, at which US 401 splits off and US 15 runs concurrent with US 501. US 1 briefly merges with US 15-501 through Aberdeen and Sanford. The route continues north of Sanford with NC 87 towards Pittsboro. Past Pittsboro, US 15-501 goes toward Chapel Hill and skirts around the southeastern edge of the city and then across I-40 to Durham. (Prior to the construction of the Chapel Hill bypass, US 15 ran through Chapel Hill, and as of 2018 there is a "Jefferson Davis Highway" marker on Franklin Street, Chapel Hill's main street.) Here US 15-501 splits into Business and Bypass routes. Before US 15 Business and Bypass highways rejoin on the other side of Durham, I-85 merges into US 15 Business. Then I-85/US 15 go north. Right after crossing Falls Lake at exit 186, US 15 splits off to the east. US 15 runs parallel to I-85, going through the city of Creedmoor. It then crosses back over I-85, goes through the city of Oxford, on through Bullock, and then to the N.C.-Virginia state line. Virginia Virginia's section of US