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U.S. Route 220 (US 220) is a part of the U.S. Highway System that runs from Rockingham, North Carolina to Waverly, New York. In Maryland, the federal highway runs from the West Virginia state line at the Potomac River in McCoole north to the Pennsylvania state line in Dickens. Known as McMullen Highway for much of its length in Maryland, US 220 is the primary north–south route in central Allegany County, connecting Cumberland with its southern suburbs and Keyser, West Virginia to the south and Bedford, Pennsylvania to the north. The federal highway is part of the National Highway System between the West Virginia state line and Maryland Route 53 (MD 53) in Cresaptown and between Interstate 68 (I-68), with which it is concurrent through Cumberland, and the Pennsylvania state line.〔 The road to Bedford was paved within the city of Cumberland by 1910 and constructed north to Pennsylvania in the 1910s. This highway comprised the southernmost portion of US 220 when the U.S. Highway System was established in 1927. McMullen Highway was constructed starting from Cumberland and finishing in McCoole in the 1920s. When that highway was completed around 1930, US 220 was extended south into West Virginia. Both the northern and southern portions of the federal highway were reconstructed in the 1940s and 1950s, including a new bridge over the Potomac River. US 220 was rerouted within Cumberland multiple times before being placed on I-68 in the early 1980s to bypass downtown Cumberland. The bypass of Bedford Road between I-68 and the Pennsylvania state line opened in 2000. A new bridge over the Potomac River is currently under construction. In addition, relocation of the highway from I-68 south into West Virginia is under consideration. ==Route description== US 220 enters Maryland in southwestern Allegany County, crossing the Potomac River and its own old alignment on a bridge from Keyser to McCoole. The highway meets the eastern terminus of MD 135 (Paxton Street) before gaining a climbing lane and ascending a hill. US 220 crosses over its old alignment again, then meets the old alignment, unsigned MD 135A, at the top of the hill. The federal highway turns northeast as McMullen Highway, a two-lane road paralleling the Potomac River north to Cumberland. The highway passes through the hamlet of Dawson, where it passes a curve of its old alignment designated MD 830A and closely parallels CSX's Mountain Subdivision. US 220 splits away from the railroad tracks to follow the valley of Deep Hollow Creek between Fort Hill immediately to the east and Dans Mountain further to the west. After passing through the hamlet of Danville, the federal highway passes into the valley of Mill Run. After passing another curve of old alignment designated MD 830B, US 220 leaves Fort Hill and Mill Run behind.〔〔 US 220 passes through the villages of Rawlings and Bier before intersecting the western end of MD 956 (Patriot Parkway) near Pinto. Beyond MD 956, US 220 enters a more densely populated area, passing through the community of Bel Air. The federal highway enters Cresaptown, where US 220 intersects MD 53 (Winchester Road), which is also the southern terminus of US 220 Truck. Access to northbound MD 53 is provided by unsigned MD 636 (Warrior Drive) shortly after.〔〔 After crossing Warrior Run, Haystack Mountain flanks US 220 to the west as the federal highway passes through Amcelle, the former site of the Celanese chemical plant that is now the location of the North Branch Correctional Institution. The federal highway curves through Potomac Park, home of the Allegany County Fairgrounds. After passing the Upper Potomac Industrial Park, US 220 parallels CSX's Mountain Subdivision again before entering the city of Cumberland, where the highway is municipally-maintained. Shortly after, US 220 meets I-68 and US 40 (National Freeway) at Exit 42. Trucks and buses are prohibited from using the ramp in the diamond interchange from eastbound I-68 to southbound US 220; those vehicles must follow US 220 Truck instead.〔 Greene Street, the old alignment of US 220, continues north from the interchange as a municipal street toward downtown Cumberland.〔〔 US 220 becomes concurrent with eastbound I-68 and US 40, passing through downtown Cumberland on a narrow, curvaceous viaduct where the highway meets the northern end of MD 51 and the east end of US 40 ALT. After passing through the eastern part of the city, US 220 exits the freeway at Exit 46 onto MD 144 (Ali Ghan Road), which it follows east a short distance before turning north over I-68 onto a two-lane limited access highway with a speed limit of . MD 144, the old alignment of US 40, continues east toward Rocky Gap State Park. The southbound direction of US 220 joins westbound I-68 via a long ramp on a sweeping curve. After crossing Evitts Creek, Mason Road, and Bealls Mill Road, the federal highway reaches the intersection with MD 807 (Bedford Road) and MD 807E (Smouses Mill Road) in Dickens, the former being the old alignment of US 220. US 220 turns northeast, passing MD 807D (Pine Ridge Road) and MD 807C before crossing the Pennsylvania state line, where the route continues north as Bedford Valley Road toward Bedford.〔〔 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 Maryland」の詳細全文を読む スポンサード リンク
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