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In the U.S. state of Virginia, U.S. Route 220 (US 220) is a major north-south state highway that extends from the North Carolina state line through Roanoke to the West Virginia state line. South of Roanoke, US 220 is a four-lane highway within the proposed Interstate 73 corridor. US 220 narrows to two lanes north of Roanoke, connecting to Interstate 64 near Clifton Forge and then paralleling the Appalachian Mountains north-northeasterly in the direction of Cumberland, Maryland. ==Route description== US 220 enters Virginia just north of the community of Price, North Carolina. From the state line to Roanoke, US 220 is a four-lane mix of freeway bypasses and at-grade rural highway. Some high traffic areas and non-divided stretches have speed limits of or lower. In particular, the stretch through Boones Mill is not divided; the town is also well known as a speed trap.〔The Roanoke Times, (Catching Speeders Gets Easier ), May 7, 2004〕 This segment follows the same general alignment as the Norfolk Southern Railway's Winston-Salem District, opened in 1892 by the Roanoke and Southern Railway.〔H.V. & H.W. Poor, Manual of Railroads of the United States for 1894, (p. 599 )〕 US 220 meets the northern terminus of State Route 87 in Ridgeway, and soon after turns west to bypass the city of Martinsville on a freeway partially shared with US 58. Another bypass takes the highway around the town of Rocky Mount, after which US 220 crosses the Blue Ridge at Murray Gap. Soon after entering the city of Roanoke, US 220 intersects SR 419 and again becomes a freeway, this one passing just east of downtown Roanoke and becoming Interstate 581 northwest to Interstate 81. US 220 overlaps I-81 northeast to near Daleville, where it exits to the north onto a four-lane road through Daleville and Fincastle. Near Eagle Rock, the road narrows to two lanes and begins to parallel the James River. US 220 follows the James River and its major tributary, the Jackson River, north to near Clifton Forge, where it begins to overlap Interstate 64 and US 60 west, still following the Jackson River, to Covington. Also paralleling these rivers are CSX Transportation's Alleghany Subdivision and James River Subdivision, opened in 1867 and 1881 respectively by the Virginia Central Railroad and Richmond and Alleghany Railroad. US 220 is a two-lane road for the rest of its route from Covington to West Virginia, as it travels through a series of valleys in the Ridge-and-Valley Appalachians. It begins by following more of the Jackson River to near Clearwater Park, but then crosses a ridge into a different valley. This is repeated several times until Forks of Waters, where the South Branch Potomac River enters US 220's valley and parallels its final to the state line. 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「U.S. Route 220 in Virginia」の詳細全文を読む スポンサード リンク
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